14 Best Compostable Trash Bags That Are Eco-Friendly and Reliable

UNNI’s 13-gallon, 100-count tall kitchen bags are my best overall pick for shoppers who want a full-size option from a lineup with several kitchen-bin formats. For countertop scraps, BioBag’s 2.6-gallon bags offer a focused food-scrap size, while the 0.9-mil UNNI 13-gallon bags stand out for buyers prioritizing thicker liners. The main tradeoffs are fit, closure style, bag thickness, and how quickly you use a pack; compostable claims also depend on the disposal conditions available to you. I compare those differences across all 14 options below. Read on for the picks, buying advice, and answers to common questions.

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Key Takeaways

• Bin size is the first meaningful split: the lineup ranges from 1.6-gallon countertop scrap bags to 13-gallon kitchen liners, and a mismatch can make any other feature irrelevant.
• UNNI’s full-size options cover distinct needs: the 100-count tall kitchen pack is my balanced overall choice, while the 200-count, 0.9-mil pack favors buyers who want thicker bags and a larger supply.
• Small-bag pack size changes the value equation: UNNI offers 2.6-gallon bags in 100- and 200-count packs and 3-gallon bags in the same counts, so expected use and bin fit matter more than count alone.
• Closure styles serve different routines: drawstring models from Simply Bio and SUPERBIO suit people who want a gathered top, while tie-handle options are present among the 1.6-gallon scrap bags.
• Small food-scrap liners dominate the variety: the range includes multiple 2.6- and 3-gallon choices, but full-size shoppers have more variation in thickness, count, and drawstring versus standard tall-kitchen formats.

Our Top Compostable Trash Bags Picks

FORID 13 Gallon Compostable Trash Bags, 80 Count, Unscented Tall Kitchen Garbage Can Liners		Best Overall for Tall Kitchen Bins	Capacity: 13 gallons / 55 liters	Count: 80 bags across 5 rolls	Dimensions: 24.8 × 31.4 inches	VIEW ON AMAZON	See Our Full Breakdown
UNNI 2.6-Gallon Compostable Bags, 100 Count, 0.71 Mil		Best for Compact Bins	Capacity: 2.6 gallons / 9.84 liters	Count: 100 bags	Dimensions: 16.3 × 16.5 inches	VIEW ON AMAZON	See Our Full Breakdown
BioBag 2.6 Gallon Compostable Food Scrap Bags, 100 Count		Best for Damp Food Scraps	Capacity: 2.6 gallons	Count: 100 bags	Dimensions: 16 × 17 inches	VIEW ON AMAZON	See Our Full Breakdown
UNNI 3-Gallon Compostable Bags for Countertop Bins, 100 Count		Best for Roomier Countertop Caddies	Capacity: 3 gallons / 11.35 liters	Count: 100 bags per roll	Dimensions: 16.9 × 17.7 inches	VIEW ON AMAZON	See Our Full Breakdown
Compostable Kitchen Trash Bags, 13 Gallon, 32 Count		Best for Thicker Everyday Liners	Capacity: 13 gallons / 49.2 liters	Bag dimensions: 22.6 × 33.6 inches	Thickness: 0.87 mil	VIEW ON AMAZON	See Our Full Breakdown
1.6-Gallon Compostable Food Scrap Bags with Tie Handles, 120 Count		Best Bulk Pack for Kitchen Scraps	Capacity: 1.6 gallons	Dimensions: 28 in x (13.8 + 4.7) in	Thickness: 0.7 mil	VIEW ON AMAZON	See Our Full Breakdown
SUPERBIO 1.6-Gallon Compostable Food Scrap Bags, Handle Tie, 50 Count		Best Small-Bin Reinforced Bottom	Capacity: 1.6 gallons (6 liters)	Dimensions: 16.1 x 19.3 inches	Thickness: 0.63 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Tall Kitchen Bags, 13 Gallon, 100 Count		Best Multipurpose Tall Kitchen Bag	Capacity: 13 gallons (49.2 liters)	Dimensions: 23.75 x 31.49 inches	Thickness: 0.9 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI 2.6-Gallon Compostable Bags, 200 Count, 0.71 Mil		Best High-Count Countertop Pack	Capacity: 2.6 gallons (9.84 liters)	Quantity: 200 bags	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown
Simply Bio 13 Gallon Compostable Drawstring Trash Bags, 30 Count		Best Heavy-Duty Drawstring	Capacity: 13 gallons (49.21 liters)	Bag size: 23.7 in W x 29.4 in H	Quantity: 30 bags	VIEW ON AMAZON	See Our Full Breakdown
SUPERBIO 13 Gallon Compostable Drawstring Kitchen Waste Bags, 30 Count		Best for Heavy Kitchen Loads	Capacity: 13 gallons / 49.2 liters	Bag size: 25.2 x 25.6 inches	Thickness: 1 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Kitchen Bags, 13 Gallon, 50 Count		Best for Home Composting	Capacity: 13 gallons / 49.2 liters	Bag dimensions: 23.75 x 31.49 inches	Thickness: 0.9 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Kitchen Bags, 13 Gallon, 200 Count, 0.9 Mil		Best Bulk Pack	Capacity: 13 gallons / 49.2 liters	Count: 200 bags	Rolls: 4 rolls of 50	VIEW ON AMAZON	See Our Full Breakdown
UNNI 3 Gallon Compostable Bags for Countertop Bin, 200 Count, 0.71 Mil		Best Bulk Pick for Countertop Bins	Capacity: 3 gallons / 11.35 liters	Bag dimensions: 16.9 x 17.7 inches	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown

More Details on Our Top Picks

1. FORID 13 Gallon Compostable Trash Bags, 80 Count, Unscented Tall Kitchen Garbage Can Liners

   

   Best Overall for Tall Kitchen Bins

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   For a household that wants one compostable liner for a full-size kitchen bin, FORID offers a useful balance of capacity and stated load strength. Its 13-gallon size and octagonal bottom seal rated for up to 83 pounds give it an edge in heavy-duty claims over the smaller UNNI and BioBag countertop scrap liners, which are designed for food scraps rather than a full kitchen’s mixed waste. The ASTM D6400 and EN 13432 certifications make its compostability credentials clear, while the green-tinted transparency can help separate contents. The tradeoff is that plant-starch material may be less durable than conventional plastic under heavy loads, and humidity or long storage can weaken it. Check your bin dimensions and local composting rules before choosing it.

   Pros:

   • 13-gallon capacity suits many full-size kitchen bins
   • Octagonal bottom seal is rated for loads up to 83 pounds
   • Certified to ASTM D6400 and EN 13432
   • Green transparency can help with waste sorting

   Cons:

   • Plant-starch material may be less durable than conventional plastic under heavy loads
   • Humidity and extended storage can contribute to material degradation
   • Bin fit is limited by the listed diameter and side-length dimensions

   Best for: Households with a compatible tall kitchen bin that want a certified compostable liner for routine kitchen waste.

   Not ideal for: People who routinely carry very heavy or sharp waste, or who need bags that can sit in humid storage for long periods.

   • Capacity:13 gallons / 55 liters
   • Count:80 bags across 5 rolls
   • Dimensions:24.8 × 31.4 inches
   • Material:Plant Starch Material (PSM)
   • Certifications:ASTM D6400, EN 13432
   • Load capacity:Up to 83 pounds / 38 kg
   • Scent and color:Unscented; clear green
   • Bin fit:Round bins up to 15.7 inches diameter and 27.4 inches high; rectangular bins up to 12.4 inches on the longest side
   Our verdict

   “Choose FORID if you want a certified 13-gallon compostable liner with a reinforced bottom and your bin fits its dimensions.”

   → See it on Amazon →

2. UNNI 2.6-Gallon Compostable Bags, 100 Count, 0.71 Mil

   

   Best for Compact Bins

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   These UNNI bags suit a small kitchen compost caddy or bathroom bin where compact fit matters more than tall-bin capacity. At 2.6 gallons, they are much smaller than the 13-gallon FORID liners, so they are easier to match to countertop containers and less likely to bunch around the rim of a modest bin. Their 0.71 mil thickness and certifications from BPI, CMA, and OK compost HOME give buyers specific material and compostability details. BioBag’s 2.6-gallon bags are the closest comparison: BioBag highlights breathability for damp food scraps, while UNNI lists a thicker gauge and a defined nine-month use window. That storage limit matters because these bags need a cool, dry place and timely use. Local facilities may also differ in what they accept.

   Pros:

   • Compact 2.6-gallon size suits small bins
   • 0.71 mil thickness is specified
   • Certified by BPI, CMA, and OK compost HOME
   • 100 bags per pack

   Cons:

   • Too small for standard tall kitchen trash cans
   • Best performance requires cool, dry storage and use within nine months
   • Commercial composting acceptance varies by location

   Best for: People with a small countertop caddy, bathroom bin, or office wastebasket who want home-compostability certification.

   Not ideal for: Households seeking a liner for a standard tall kitchen can or anyone likely to store bags beyond the recommended nine months.

   • Capacity:2.6 gallons / 9.84 liters
   • Count:100 bags
   • Dimensions:16.3 × 16.5 inches
   • Thickness:0.71 mil
   • Material:Plant-based compostable material
   • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
   • Recommended use period:Within 9 months
   • Color:Green
   Our verdict

   “Pick these UNNI bags for a compact bin and home-composting flexibility, provided you can use them within nine months.”

   → See it on Amazon →

3. BioBag 2.6 Gallon Compostable Food Scrap Bags, 100 Count

   

   Best for Damp Food Scraps

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   BioBag is the more food-scrap-focused choice among the compact liners here. Its breathable construction is intended to let moisture evaporate, which may help limit condensation and odors in a countertop compost pail. That design differs from the thicker 0.71 mil UNNI 2.6-gallon bags, which emphasize thickness and multiple certifications; BioBag lists a 0.64 mil thickness and BPI certification to ASTM D6400. The intended use is clear: line a small caddy and move scraps to a composting system, rather than hold waste for long periods or serve as a general-purpose heavy liner. The catch is the maintenance rhythm: BioBag recommends changing the bag every three to five days to manage condensation, and it should be used within a year. Compost collection access still depends on local rules.

   Pros:

   • Breathable design supports moisture evaporation
   • Designed for most countertop compost bins
   • BPI certified and meets ASTM D6400
   • Made with plant starches, vegetable oils, and compostable polymers

   Cons:

   • Needs changing every three to five days to reduce condensation
   • Not designed for long-term storage or heavy-duty reuse
   • Recommended for use within one year of purchase

   Best for: Home cooks who collect moist food scraps in a countertop pail and empty it regularly into a compost system.

   Not ideal for: People who want a bag for dry, mixed kitchen rubbish, extended storage, or heavy-duty reuse.

   • Capacity:2.6 gallons
   • Count:100 bags
   • Dimensions:16 × 17 inches
   • Thickness:0.64 mil
   • Material:Plant starches, vegetable oils, compostable polymers
   • Certification:BPI certified; meets ASTM D6400
   • Recommended change frequency:Every 3–5 days
   • Origin:Made in USA with imported resin from Italy
   Our verdict

   “Choose BioBag over the thicker UNNI compact liner when breathable handling of frequently emptied food scraps is your priority.”

   → See it on Amazon →

4. UNNI 3-Gallon Compostable Bags for Countertop Bins, 100 Count

   

   Best for Roomier Countertop Caddies

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   When a 2.6-gallon liner feels cramped, this UNNI option adds a little more room without jumping to a full-size kitchen bag. Its 3-gallon capacity and 0.71 mil thickness make it a fit for countertop caddies that collect daily scraps, and the BPI, CMA, and OK compost HOME certifications offer more detail than the Seedling-certified 13-gallon bags in this roundup. Compared with BioBag’s 2.6-gallon liner, UNNI gives you a larger stated capacity and thicker material, while BioBag specifically calls out breathability and a frequent change schedule. UNNI’s tradeoff is storage discipline: it recommends use within nine months and cool, dry storage. It is also not a tall-bin solution, and acceptance at commercial compost sites depends on local programs.

   Pros:

   • 3-gallon capacity offers more room than 2.6-gallon liners
   • 0.71 mil thickness is specified for everyday scraps
   • Certified by BPI, CMA, and OK compost HOME by TÜV AUSTRIA
   • 100 bags per roll

   Cons:

   • Too small for standard tall kitchen bins
   • Best performance requires use within nine months
   • Commercial composting availability varies by location

   Best for: Households with a larger countertop compost pail that want a certified liner for everyday food scraps.

   Not ideal for: Buyers lining a full-size kitchen can, or those who prefer a breathable liner with explicit odor and moisture management guidance.

   • Capacity:3 gallons / 11.35 liters
   • Count:100 bags per roll
   • Dimensions:16.9 × 17.7 inches
   • Thickness:0.71 mil
   • Material:Plant-based materials
   • Certifications:BPI (ASTM D6400), CMA, OK compost HOME by TÜV AUSTRIA
   • Recommended use period:Within 9 months
   Our verdict

   “Choose this UNNI size if your countertop pail outgrows 2.6-gallon liners and you can store the bags dry and use them promptly.”

   → See it on Amazon →

5. Compostable Kitchen Trash Bags, 13 Gallon, 32 Count

   

   Best for Thicker Everyday Liners

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   This 13-gallon option gives buyers a 0.87 mil thickness specification for everyday kitchen scraps and waste, along with dimensions intended for standard tall cans. That makes it a different fit from the countertop-focused BioBag and UNNI liners, and its stated gauge is thicker than the 0.71 mil UNNI compact bags. FORID is the stronger choice if you want a listed 83-pound load capacity and ASTM D6400 plus EN 13432 credentials; this bag instead lists Seedling certification and does not provide a load rating. The pack contains 32 bags, so it offers less quantity than FORID’s 80. Its six-month use window also calls for faster turnover and dry storage. Buyers should confirm that the Seedling mark matches their local composting route.

   Pros:

   • 13-gallon capacity is aimed at standard tall kitchen cans
   • 0.87 mil thickness is specified
   • Plant-based materials
   • Seedling certified compostable

   Cons:

   • 32 bags per roll is fewer than the FORID 80-count pack
   • Recommended for use within six months
   • No load capacity is specified

   Best for: People with standard tall kitchen cans who prioritize a specified thicker liner for ordinary household waste and can use the pack promptly.

   Not ideal for: Buyers who need a stated load rating, a longer storage window, or an especially large pack.

   • Capacity:13 gallons / 49.2 liters
   • Bag dimensions:22.6 × 33.6 inches
   • Thickness:0.87 mil
   • Quantity:32 bags per roll
   • Material:Plant-based materials
   • Certification:Seedling certified compostable
   • Storage:Store cool and dry; use within 6 months
   Our verdict

   “Choose this bag if you want a thicker specified 13-gallon liner and will use it within six months, but choose FORID for a stated load rating and broader listed certifications.”

   → See it on Amazon →

6. 1.6-Gallon Compostable Food Scrap Bags with Tie Handles, 120 Count

   

   Best Bulk Pack for Kitchen Scraps

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   For households that empty a small food scrap bin often, this pack pairs 120 bags with a compact 1.6-gallon capacity, so replacements are on hand without moving up to a large kitchen liner. Its EN 13432 and ASTM D6400 certifications give buyers specific compostability standards to check against local collection rules. Tie handles make the filled bag easier to close than the UNNI 2.6-Gallon Compostable Bags, which are intended for countertop bins but do not list handles. The tradeoff is care: these corn starch and PBAT bags need a cool, dark, dry storage spot, and the guidance says to use them within 18 months. Choose this pack for frequent scrap disposal; skip it if bags may sit in a warm or humid cupboard for long stretches.

   Pros:

   • 120-bag pack reduces how often countertop-bin liners need replenishing
   • Tie handles help close and carry food scraps
   • Certified to EN 13432 and ASTM D6400
   • Made for kitchen food waste

   Cons:

   • Requires cool, dark, dry storage to protect the material
   • Recommended for use within 18 months of purchase
   • 1.6-gallon capacity is too small for a main household trash bin

   Best for: Households that collect food scraps in a small kitchen caddy and want a large supply of tie-handle liners.

   Not ideal for: Buyers who need large kitchen-bin liners or cannot store bags away from heat, sunlight, and moisture.

   • Capacity:1.6 gallons
   • Dimensions:28 in x (13.8 + 4.7) in
   • Thickness:0.7 mil
   • Quantity:120 bags
   • Material:Corn starch and PBAT
   • Certifications:EN 13432 and ASTM D6400
   • Storage:Cool, dark, dry place; keep away from sunlight, heat, and steam
   • Recommended use period:Within 18 months of purchase
   Our verdict

   “Choose this pack for a steady supply of certified, tie-handle bags for a small food scrap caddy, provided you can store them carefully.”

   → See it on Amazon →

7. SUPERBIO 1.6-Gallon Compostable Food Scrap Bags, Handle Tie, 50 Count

   

   Best Small-Bin Reinforced Bottom

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   The SUPERBIO stands out among the small-bin options for its reinforced star-sealed bottom and certifications for both home and commercial composting. That base design is aimed at keeping heavier, damp scraps contained, while the handle ties make a filled bag easier to secure. Compared with the 120-count 1.6-Gallon Compostable Food Scrap Bags, this pack offers more explicitly listed composting certifications, including OK compost HOME, but gives you fewer bags. Its 0.63 mil thickness is also relatively light, so the reinforced base matters more than a thick-film feel. Filled bags should be disposed of within three days, and the one-year shelf life calls for reasonably regular use. Local commercial composting access can also limit where these bags go.

   Pros:

   • Reinforced star-sealed bottom is designed for heavier loads
   • Handle ties help secure filled bags
   • Certified for home and commercial composting
   • Tear resistance is stated for use as directed

   Cons:

   • 50 bags per roll is a smaller supply than the 120-count 1.6-gallon alternative
   • Filled bags should be disposed of within three days
   • Commercial composting access varies by location

   Best for: People using a small countertop food scrap bin who want a reinforced base and certifications covering home and commercial composting.

   Not ideal for: Infrequent composters who may store bags beyond a year or let filled scraps sit for more than three days.

   • Capacity:1.6 gallons (6 liters)
   • Dimensions:16.1 x 19.3 inches
   • Thickness:0.63 mil
   • Quantity:50 bags per roll
   • Material:Compostable plant-based bioplastic
   • Certifications:BPI, OK compost HOME, TÜV SEEDLING; meets ASTM D6400 and EN 13432
   • Features:Handle tie; reinforced star-sealed bottom
   • Shelf life:Approximately 1 year
   • Storage:Cool, dry place
   Our verdict

   “Pick SUPERBIO for a small scrap bin where a reinforced base and broad composting certifications matter more than pack size.”

   → See it on Amazon →

8. UNNI Compostable Tall Kitchen Bags, 13 Gallon, 100 Count

   

   Best Multipurpose Tall Kitchen Bag

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   Among the large liners in this group, the UNNI 13-gallon bag makes the most sense when one size needs to serve kitchen, bathroom, or office bins. Its 0.9 mil thickness is positioned for daily kitchen scraps, and its BPI, CMA, and OK compost HOME certifications give buyers several standards to compare with local composting rules. The Simply Bio 13 Gallon Compostable Drawstring Trash Bags go thicker at 1 mil and add a drawstring, so they may suit buyers focused on closure and carrying. UNNI instead supplies 100 bags, making it the more substantial pack for routine use. The nine-month best-performance window is a real constraint: stockpiling multiple packs may leave bags sitting too long, and commercial collection may not be available nearby.

   Pros:

   • 13-gallon size fits many kitchen, bathroom, and office bins
   • 0.9 mil thickness is specified for daily kitchen scraps
   • BPI, CMA, and OK compost HOME certifications
   • 100 bags supplied across two rolls

   Cons:

   • Best performance guidance is limited to nine months
   • Commercial composting availability varies by location
   • No drawstring closure is listed

   Best for: Households or small offices that want one certified 13-gallon liner size for several types of indoor bins.

   Not ideal for: Buyers seeking drawstring closure, a heavier 1-mil bag, or a long storage window.

   • Capacity:13 gallons (49.2 liters)
   • Dimensions:23.75 x 31.49 inches
   • Thickness:0.9 mil
   • Quantity:100 bags (2 rolls of 50)
   • Material:Plant-based compostable material
   • Certifications:BPI, CMA, and OK compost HOME; meets ASTM D6400
   • Color:Green
   • Storage guidance:Store in a cool, dry place; use within nine months for best performance
   Our verdict

   “Choose UNNI for a multipurpose 13-gallon liner and a sizable supply, but favor Simply Bio if you want a thicker bag with drawstrings.”

   → See it on Amazon →

9. UNNI 2.6-Gallon Compostable Bags, 200 Count, 0.71 Mil

   

   Best High-Count Countertop Pack

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   This UNNI pack is the high-count choice for households that line a countertop food scrap bin every day: 200 bags means fewer restocks than the 100-count UNNI 2.6-Gallon Compostable Bags listed elsewhere in the roundup. At 2.6 gallons, it also holds more than either 1.6-gallon scrap-bag option, which can mean fewer changes for a slightly larger caddy. The 0.71 mil material and unscented design suit buyers who want a more substantial liner without added fragrance, and the stated certifications include ASTM D6400, BPI, CMA, and OK compost HOME. Its limits are straightforward: this is still a small-bin bag, not a kitchen trash-can liner, and the supplied data does not specify a closure feature. Buyers with tall bins should look to the 13-gallon UNNI option instead.

   Pros:

   • 200 bags provide a larger supply than the 100-count UNNI 2.6-gallon pack
   • 2.6-gallon capacity exceeds the two 1.6-gallon options
   • 0.71 mil thickness is specified
   • Unscented and certified to several composting standards

   Cons:

   • Designed for small countertop bins rather than household trash cans
   • No closure feature is listed in the product data

   Best for: Frequent cooks with a 2.6-gallon countertop compost bin who prefer unscented liners and fewer pack replacements.

   Not ideal for: Households that need full-size kitchen liners or want handles or a drawstring closure.

   • Capacity:2.6 gallons (9.84 liters)
   • Quantity:200 bags
   • Thickness:0.71 mil
   • Material:Compostable
   • Scent:Unscented
   • Certifications:ASTM D6400, BPI, CMA, OK compost HOME
   • Item weight:3.5 pounds
   • Package dimensions:9 x 5 x 5 inches
   Our verdict

   “Choose this UNNI pack for a frequently used 2.6-gallon countertop bin when a large supply of unscented liners is the priority.”

   → See it on Amazon →

10. Simply Bio 13 Gallon Compostable Drawstring Trash Bags, 30 Count

    

    Best Heavy-Duty Drawstring

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    For a full-size bin where puncture resistance and carrying convenience lead the decision, Simply Bio offers the lineup’s thickest listed film at 1 mil and a drawstring closure. That combination gives it a clearer strength-focused role than the 0.9 mil UNNI Compostable Tall Kitchen Bags, which provide more liners but do not list a drawstring. Its PLA and PBAT material is certified for home and industrial composting under several named programs and standards, though buyers still need a suitable composting route for filled bags. The key compromise is quantity: 30 bags can run short in a busy household compared with UNNI’s 100-count pack. It also makes less sense for small food scrap caddies, where the compact 1.6- and 2.6-gallon options fit better.

    Pros:

    • 1-mil thickness is the heaviest listed in this batch
    • Drawstring closure aids tying and carrying
    • Plant-based PLA and PBAT material
    • Certified for home and industrial composting

    Cons:

    • 30-bag pack may need frequent replacement in busy households
    • Requires appropriate home or industrial composting conditions
    • Large 13-gallon format is unsuitable for countertop scrap bins

    Best for: Households that want a sturdy 13-gallon liner with drawstrings for lifting and carrying kitchen waste.

    Not ideal for: High-volume households seeking a larger pack, or buyers who need small countertop food scrap bags.

    • Capacity:13 gallons (49.21 liters)
    • Bag size:23.7 in W x 29.4 in H
    • Quantity:30 bags
    • Thickness:1 mil
    • Material:PLA and PBAT
    • Closure:Drawstring
    • Certifications:ASTM D6400, BPI, OK Compost Home, OK Compost Industrial, Seedling, EN 13432
    • Color:Green
    Our verdict

    “Choose Simply Bio when a thick 13-gallon bag and drawstring closure matter more than pack size.”

    → See it on Amazon →

11. SUPERBIO 13 Gallon Compostable Drawstring Kitchen Waste Bags, 30 Count

    

    Best for Heavy Kitchen Loads

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    For cooks who fill a tall kitchen bin with wet scraps, SUPERBIO’s 1 mil film and drawstring closure put containment first. Its 13-gallon capacity matches the UNNI 13-gallon bags, while the listed thickness is greater than their 0.9 mil film; that may suit heavier loads, though it does not remove the need to handle a full bag carefully. The tradeoff is supply: 30 bags run out sooner than UNNI’s 50-count pack or its 200-count option. Multiple certifications cover industrial composting, but the product data does not list home compost certification, so local facility access matters. I’d choose this for a kitchen that sends scraps to a commercial composting program and values a sturdy-feeling liner over a longer-lasting pack.

    Pros:

    • 13-gallon capacity fits tall kitchen bins
    • 1 mil thickness is higher than the 0.9 mil UNNI tall kitchen bags
    • Drawstring closure helps gather and carry a full bag
    • BPI, OK compost INDUSTRIAL, SEEDLING, ASTM D6400, and EN 13432 certifications are listed

    Cons:

    • 30 bags provide a smaller supply than UNNI’s 50- and 200-count tall kitchen packs
    • Industrial composting access is needed for the listed composting pathway
    • Organic waste should be disposed of within three days, and bags have an approximately one-year shelf life

    Best for: Home cooks with tall 13-gallon bins, frequent food scraps, and access to a commercial composting facility

    Not ideal for: Households without industrial composting access or buyers who want a large supply or a home-compost-certified option

    • Capacity:13 gallons / 49.2 liters
    • Bag size:25.2 x 25.6 inches
    • Thickness:1 mil
    • Count:30 bags
    • Material:Plant-based
    • Closure:Drawstring
    • Certifications:BPI Compostable, OK compost INDUSTRIAL, SEEDLING, ASTM D6400, EN 13432
    • Shelf life:Approximately 1 year
    Our verdict

    “Choose SUPERBIO if you want a thicker 13-gallon drawstring bag for scraps headed to an industrial composting facility.”

    → See it on Amazon →

12. UNNI Compostable Kitchen Bags, 13 Gallon, 50 Count

    

    Best for Home Composting

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    Among the tall kitchen options here, UNNI’s home-compost certification sets this 50-count pack apart: it lists OK compost HOME alongside BPI, CMA, and ASTM D6400. That makes it a better fit for buyers whose scraps go to a home compost system than SUPERBIO’s 13-gallon bag, whose listed certifications focus on industrial composting. The 0.9 mil film is slightly thinner than SUPERBIO’s 1 mil, and its dimensions are tailored to tall cans, but neither spec guarantees a leakproof result with very wet or heavy waste. Fifty bags offer a middle ground between SUPERBIO’s 30 and UNNI’s 200-count bulk pack. I’d pick this when home compost compatibility and a moderate supply matter more than thicker film or buying in bulk.

    Pros:

    • OK compost HOME certification is listed alongside BPI and CMA
    • 13-gallon sizing is intended for tall kitchen bins
    • 50-count pack offers more bags than SUPERBIO’s 30-count roll
    • Unscented plant-based material

    Cons:

    • At 0.9 mil, the film is thinner than SUPERBIO’s 1 mil bags
    • Best performance is specified within nine months
    • Composting options depend on local acceptance and the buyer’s composting setup

    Best for: Households with tall kitchen bins that compost scraps at home and want a moderate-size supply

    Not ideal for: Buyers who need thicker film for heavy wet loads or want a bulk pack with fewer restocks

    • Capacity:13 gallons / 49.2 liters
    • Bag dimensions:23.75 x 31.49 inches
    • Thickness:0.9 mil
    • Count:50 bags
    • Material:Plant-based compostable materials
    • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
    • Scent:Unscented
    • Use window:Within 9 months for best performance
    Our verdict

    “Pick this UNNI pack if you use a tall kitchen bin and want a home-compost-certified option without buying 200 bags.”

    → See it on Amazon →

13. UNNI Compostable Kitchen Bags, 13 Gallon, 200 Count, 0.9 Mil

    

    Best Bulk Pack

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    If a household goes through tall-bin liners quickly, four rolls of 50 make this the practical bulk pick in the lineup. It shares the 13-gallon size, 0.9 mil thickness, and listed home-compost certifications of UNNI’s 50-count pack, so the distinction is mainly supply: the smaller pack is easier to finish within its recommended storage window, while this one cuts down on repeat buying. Compared with the thicker SUPERBIO 1 mil bags, the film here is lighter, and its product data does not list a drawstring closure. Those differences matter for buyers handling heavier loads, but most of all this pack asks for storage discipline: keep it cool and dry and use within nine months. It suits busy kitchens with steady scrap volume and a composting route that accepts the bags.

    Pros:

    • 200 bags across four rolls reduce how often a household needs to restock
    • 13-gallon capacity fits tall kitchen bins
    • OK compost HOME, BPI, CMA, and ASTM D6400 certifications are listed
    • 0.9 mil thickness is specified for everyday scraps

    Cons:

    • The full pack may be difficult to use within the nine-month best-performance window for low-volume households
    • 0.9 mil film is thinner than SUPERBIO’s 1 mil bags
    • Product data does not list a drawstring closure

    Best for: Busy households that regularly fill 13-gallon kitchen bins and can use a large pack within nine months

    Not ideal for: Small households with low bag use, limited cool storage, or a preference for thicker film and a drawstring

    • Capacity:13 gallons / 49.2 liters
    • Count:200 bags
    • Rolls:4 rolls of 50
    • Bag dimensions:23.75 x 31.49 inches
    • Thickness:0.9 mil
    • Material:Plant starches
    • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
    • Storage:Cool, dry place; use within 9 months
    Our verdict

    “Choose this bulk UNNI pack if your household uses tall-bin bags steadily and can store the rolls cool and dry.”

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14. UNNI 3 Gallon Compostable Bags for Countertop Bin, 200 Count, 0.71 Mil

    

    Best Bulk Pick for Countertop Bins

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    For a countertop caddy, a 13-gallon kitchen liner is the wrong scale; UNNI’s 3-gallon size fits the smaller daily collection job, while its 200-count pack reduces frequent replenishment. The listed 0.71 mil thickness is described as extra thick for this size, but it is still thinner than the 0.9 mil tall-kitchen UNNI bags, so I’d keep loads suited to a compact scrap bin rather than expect it to carry the same volume. Certifications include BPI, CMA, and OK compost HOME, giving it broader stated composting compatibility than SUPERBIO’s industrial-focused certification list. Its main compromise is time: the product specifies use within nine months and cool, dry storage. That makes this a strong choice for steady countertop scrap collection, less so for occasional composters who may leave rolls unused.

    Pros:

    • 3-gallon capacity is sized for compact countertop bins
    • 200-count pack reduces the need for frequent restocking
    • OK compost HOME, BPI, CMA, and TÜV AUSTRIA certifications are listed
    • 0.71 mil thickness is specified for daily kitchen scraps

    Cons:

    • Too small for tall 13-gallon kitchen bins such as those served by the other UNNI bags in this lineup
    • The 200-count supply may outlast the nine-month recommended use window in low-volume households
    • Requires cool, dry storage

    Best for: Regular home cooks with a 3-gallon countertop compost caddy and a home composting setup

    Not ideal for: Buyers with tall kitchen bins or low-volume scrap habits unlikely to use 200 bags within nine months

    • Capacity:3 gallons / 11.35 liters
    • Bag dimensions:16.9 x 17.7 inches
    • Thickness:0.71 mil
    • Count:200 bags
    • Rolls:2 rolls of 100
    • Material:Plant-based
    • Certifications:BPI (ASTM D6400), CMA, OK compost HOME (TÜV AUSTRIA)
    • Use window:Within 9 months of purchase
    Our verdict

    “Choose this UNNI pack for a compact countertop bin if you collect scraps regularly and can use the rolls within nine months.”

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How We Picked

I compared the 14 listed products on the details that shape everyday fit and handling: stated capacity, bag count, thickness where provided, and closure type. I gave priority to clear use cases, since a liner meant for a countertop food-scrap bin solves a different problem from a tall kitchen bag holding mixed household waste. I also considered how pack size may suit regular use, while recognizing that a larger count is only useful if the bags fit the bin and get used before storage conditions become a concern.

The order reflects how broadly useful and clearly specified each option appears for its intended job. UNNI’s 13-gallon 100-count pack ranks first as a straightforward full-size starting point; smaller food-scrap bags and more specialized closures follow for narrower routines. The thicker 0.9-mil UNNI pack earns a premium role based on its stated build, while products with similar sizes are separated by count, thickness, or closure where those details are available. Product names and listed specifications alone do not establish how a bag performs in every composting system, so I treat compostability as dependent on the buyer’s local disposal setup.

Factors to Consider When Choosing Compostable Trash Bags

Choosing compostable trash bags starts with matching the bag to your actual waste routine. Capacity, closure, and disposal options matter together: a bag that fits the bin but cannot go where you intend to dispose of it may not serve its purpose. I’d check these broader points before choosing based on pack count or a compostable label alone.

Match Capacity to the Bin and the Waste

Capacity labels are a useful starting point, but the bin’s rim width, depth, and shape affect fit too. A tall kitchen bag may list 13 gallons and still sit awkwardly on a wide or unusually deep can. Small food-scrap liners are designed around countertop or compact bins, where a few extra inches of bag can bunch up or slip inside. Measure the bin opening and depth, then compare those measurements with the bag dimensions if the manufacturer provides them. Also think about how often you empty it: a small bag can be sensible for scraps emptied frequently, while a larger liner suits mixed kitchen waste collected over longer stretches. Avoid choosing by gallon count alone when the bin has a nonstandard shape.

Check Which Composting Route Accepts the Bag

“Compostable” does not mean every municipal, backyard, or food-waste program will accept a bag. Some collection programs require certified products, while others accept loose scraps only because bag material can interfere with processing. Home compost conditions also vary, and a product’s claim may refer to a specific standard or facility environment. Check the bag packaging for the exact certification and disposal guidance, then compare it with your local program’s rules. If your service does not accept liners, a paper collection method or an empty-and-rinse routine may fit better. This check can matter more to the final outcome than choosing between two similar bag sizes.

Choose a Closure That Fits Your Emptying Routine

Drawstrings gather the top of a full-size bag quickly, which can help when carrying mixed kitchen waste to an outdoor bin. Tie handles give a compact food-scrap bag a simple way to close, but they take a little space from the usable opening. Bags without those features may be fine for liners that stay in a covered pail and get emptied before they are full. Think about whether you need to carry the bag, contain odors, or simply keep scraps off the bin interior. A closure can improve handling, but it cannot compensate for an oversized liner or waste that sits too long. Match the style to the trip from your kitchen bin to your disposal point.

Balance Thickness With How You Use the Bag

Thickness can be a useful clue when you routinely collect heavier or wetter waste, but it is not a guarantee against leaks or tears. The listed 0.71-mil small bags and 0.9-mil full-size bags give buyers a specification to compare, while many products in the lineup do not state thickness in their names. Treat thickness as one part of the decision alongside capacity, seams, and the type of waste you put inside. For food scraps, draining excess liquid and avoiding sharp packaging can reduce strain on any liner. Paying more for a thicker option makes the most sense when your routine puts more weight or handling stress on the bag. For dry, frequently emptied scraps, a thinner bag may be adequate if its fit and disposal instructions match your needs.

Pick Pack Size Around Turnover and Storage

A large count can reduce how often you reorder, but it also asks you to store more bags at once. Compostable materials can be sensitive to heat, moisture, and age, so follow the package’s storage guidance and avoid assuming an open box will keep indefinitely. Estimate your weekly use before choosing between 100- and 200-count small-bag packs or the different full-size counts. If you use a countertop liner every day, a larger pack may suit your routine; occasional use may favor a smaller supply. Keep bags in a cool, dry spot and rotate older packs forward. The right count is the one you can use under suitable storage conditions, not simply the biggest number on the package.

Frequently Asked Questions

Can I put these bags in my municipal food-waste bin?

That depends on the rules of your collection service, not just the wording on a bag. Some programs accept only liners with specific certifications, and some ask residents to place scraps loose in the bin. Check your municipality’s accepted-materials list and compare it with the certification or disposal directions printed on the package. If the program does not name the bag standard, ask the service before relying on the liner. Using an unaccepted bag can lead to the whole load being treated as contamination.

Should I use a 2.6-gallon or 3-gallon liner for countertop scraps?

Start with the bin’s opening and depth rather than choosing by the gallon label alone. A slightly larger liner can make it easier to secure the edge, but excess material may fold into the bin or become more awkward to remove. If you empty scraps often, a smaller capacity can limit how long wet food waste sits in the kitchen. Check the product dimensions and compare them with your bin, especially if its rim is wide. For a close fit, choosing the smaller bag that stays securely on the rim may be more practical than maximizing capacity.

Are thicker compostable bags always less likely to leak?

Thickness may help with handling heavier loads, but it does not by itself establish leak resistance. Seams, bag construction, storage, and the waste inside all play a part. Wet scraps can stress a liner, and sharp bones or packaging can puncture it regardless of the stated mil thickness. Drain liquids and avoid overfilling any bag before carrying it. If you regularly collect heavy kitchen waste, the 0.9-mil UNNI option gives you a thicker stated specification in this lineup, though your disposal program still needs to accept it.

When does a drawstring bag make more sense than a standard tall kitchen liner?

A drawstring is useful when you want to gather the opening and carry the bag without tying separate handles. That can suit full-size kitchen waste headed to an outdoor container. A standard tall kitchen liner may be enough when the bag stays in a can until you empty it, especially if you do not need a cinched top. Compare the bag’s size and fit as well as the closure, since a drawstring cannot fix a liner that slips off the rim. Also confirm that the specific bag is accepted by your composting or waste program.

How many bags should I buy at once?

Estimate how many liners you use in a week, then choose a pack that you can store properly and finish at a reasonable pace. The lineup includes several 100- and 200-count small-bag packs, along with full-size packs of different counts, so a high count is not automatically the right choice. Follow the manufacturer’s storage directions and keep opened bags away from excess heat and moisture. If your use is occasional or you are unsure about fit, a smaller pack limits the chance of storing bags you cannot use. Frequent daily use makes a larger pack more practical when the size and disposal instructions already suit your routine.

Conclusion

For most full-size kitchen bins, I recommend UNNI’s 13-gallon, 100-count tall kitchen bags as the best overall starting point. The best value depends on your usage: frequent countertop-bin users can compare UNNI’s 200-count 2.6- or 3-gallon packs, while occasional users may prefer a smaller count. For buyers prioritizing a thicker stated specification, the 0.9-mil UNNI 13-gallon pack is my premium pick. Beginners should start by measuring their bin and choosing a familiar capacity, such as the standard 13-gallon format for many kitchen cans or a compact liner for a scrap pail. For specific needs, choose BioBag’s 2.6-gallon food-scrap bags for a dedicated small-bin option or a Simply Bio or SUPERBIO drawstring model when gathering the top matters. Before buying, confirm that your local disposal program accepts the bag you choose.