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UNNI Compostable Liner Bags

Curated from 107 real Reddit conversations

Refreshed on: April 10, 2025

UNNI Compostable Liner Bags

Brand: UNNI

Price: $12

Snoop Score:

5.9

Sentiment

5.0

Popularity

3.8

Technical

5.8

Buy on Amazon for $12 See All Compost Bags Reviews

As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The UNNI Compostable Liner Bags are designed to help consumers manage kitchen food scraps sustainably. With a capacity of 2.6 gallons and a commitment to eco-friendliness, these extra thick bags support composting efforts both at home and in commercial settings. Consumer feedback highlights the effectiveness of these bags in compost heaps, with many users praising their durability and compostability. As one user noted, "it's really nice to use the bags so the bin doesn't get super gross," reflecting a positive sentiment towards their functionality. However, some concerns have been raised about their performance in certain conditions, such as moisture retention and size limitations for larger food amounts. Overall, the UNNI Compostable Liner Bags are recommended for those seeking a sustainable alternative to traditional plastic bags, especially for composting purposes. While there are some drawbacks, the strong positive feedback regarding their compostability makes them a valuable choice for eco-conscious consumers.

Not for you? Check out our other rated Compost Bags

Compostable bags break down just fine in my compost heap.
Positive Feedback

They don't keep your produce fresh.
Negative Feedback

5.9

UNNI Compostable Liner Bags

Buy on Amazon for $12

Kitchen Food Scrap Management

8 / 10

Home Composting

6 / 10

Eco-friendly Waste Disposal

6 / 10

Versatile Bin Compatibility

6 / 10

See how this compares to all Compost Bags

What it does well!

Key strengths users can’t stop talking about.

Compostable bags break down effectively in compost heaps.

“Compostable bags break down just fine in my compost heap.”➕

Compostable bags support sustainable waste management.

“The important thing is to compost food waste.”➕

Strong compostable bags

“One of the few things I still have on automatic reorder with Amazon.”➕

UNNI bags are CMA certified for composting

“It's really nice to use the bags so the bin doesn't get super gross.”➕

“They have CMA (along with a bunch of others).”➕

Home compostable certification

“If you’re hot composting it will go faster.”➕

“If they say it's compostable, it's more compostable than anything else in the compost bin.”➕

Compostable bags eventually break down

“I want to know how compostable they actually are now.”➕

“Guess at least it does eventually break down.”➕

“the majority of these bags break down within the year.”➕

Compostable bags can last over a week if kept dry

“If mine stay dry (only holding compost browns), they will last over a week.”➕

UNNI is considered an affordable compostable brand

“I think the brand Unni on amazon is the cheapest compostable brand I could find on Amazon.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.

Compostable bags allow moisture to pass, causing produce to wilt quickly.

“They don't keep your produce fresh.”➕

“when they start to, they smell like death, and make my vegetables smell like death as well.”➕

“produce going bad quickly if you leave it in those TJ bags after bringing them home?”➕

“the compostable aspect of the bags makes liquids leak through them.”➕

Compostable bags are not suitable for storing food in the fridge.

“I don’t think they are meant for storing food in the fridge.”➕

Compostable bags may produce methane in landfills.

“Yes, If they're organic material compostable they could produce more methane compared to plastics in landfill.”➕

“I think that what they're referring to is that putting compostable waste in municipal trash creates methane, which contributes to climate change.”➕

Bags may not break down completely in home compost bins.

“I'm sure if you have a super hot pile and turn regularly you'll get ok results if they are near the centre but.... eeeeeh.”➕

“Can confirm, they didn't break down completely after 7 years in mine.”➕

“How? Not by asking them politely, I tried that.”➕

“you’d be better of just lining your bucket with kitchen roll or newspaper.”➕

Bags do not decompose quickly enough for certain municipal food waste collections.

“We have been asked by Cambridgeshire council not to use these in our food waste collections and only to use paper ones, as they don’t break down quick enough in their systems.”➕

Bags are too small for medium food amounts

“The problem I'm having is that the bags are just... SMALL.”➕

Not suitable for backyard composting without heat

“I was under the impression these are only machine compostable and won’t in a pile.”➕

Compostable bags require industrial composting

“They can only be composted in an industrial composting facility.”➕

Customer service issues with product

“Had a bad experience with Unni customer service after buying bags and having the entire new roll tear to shreds because they don’t print an expiry date on their products.”➕

Compostable bags may not be accepted in municipal composting.

“The bags seem legit but hey the world is full of scams so maybe they are not actually compostable.”➕

“Your municipality is probably tired of people putting plastic bags in the compost bin.”➕

Concerns about the bags splitting or tearing.

“the bag proceeds to split in two. Nope, the bag disintegrated in my hands.”➕

Biodegradable bags require oxygen to decompose, limiting effectiveness in landfills

“The problem biodegradable anything is that in order to decompose it needs access to oxygen, so while it may be a biodegradable bag, that bag is going to go to a landfill where it will be buried and "mummified".”➕

Compare On All Talked About Dimensions

Product Name	Price	Score	See Details	Buy Now
RAYTID Compostable Trash Bags 2.6 Gallon	$12	8.4	Details	Buy
Reli. Compostable 33 Gallon Trash Bags	$34	7.5	Details	Buy
Reli. Compostable 33 Gallon Trash Bags	$59	7.2	Details	Buy
UNNI Compostable Liner Bags	$20	7.0	Details	Buy
UNNI Compostable Liner Bags	$16	6.8	Details	Buy
YORJA 1.6 Gallon Tie Handles Compost Trash Bags	$9	6.2	Details	Buy
SUPERBIO 13 Gallon Compostable Drawstring Kitchen Waste Bags	$22	6.1	Details	Buy
UNNI Compostable Liner Bags	$12	5.9	Details	Buy
C CRYSTAL LEMON Biodegradable Kitchen Food Waste Bags	$14	5.8	Details	Buy
AYOTEE Mini Trash Bags - 200 Counts	$15	5.6	Details	Buy
SUPERBIO Compostable Food Scrap Bags	$13	4.9	Details	Buy
BioBag Original Compostable Bag	$12	4.8	Details	Buy
AYOTEE 75 Counts Mini Garbage Bags	$7	4.5	Details	Buy
ANECO 100% Compostable Waste Bags 2.6 Gallon	$17	4.4	Details	Buy
INNOTAK Lucky Family Green Compost Bags	$9	4.2	Details	Buy
Green Handle US Compostable 3 Gallon Kitchen Trash Bag	$6	4.1	Details	Buy
FORID Compostable Trash Bags - 13 Gallon	$18	3.9	Details	Buy
GreFusion Compostable Bags for Kitchen Compost Bin	$14	3.5	Details	Buy
OMOTIYA Compostable Trash Bags, Small Compost Bags 3 Gallon	$12	3.5	Details	Buy
BioBag Original Compostable Bag, 3 Gallon	$19	3.0	Details	Buy
TERRACOR 2.6 Gallon Compostable Bags	$11	2.5	Details	Buy
BEIDOU-PAC 1.6 Gallon Compostable Trash Bags	$15	0.8	Details	Buy
ECOBEWUS 2.6 Gallon Compostable Bags	$16	0.3	Details	Buy

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.

Alternatives to bags include using paper towels or newspaper for lining compost bins.

“My folks just use a bowl and put a paper towel in the bottom.”➕

“I use junk mail and paper bags that are too torn up to use to line the compost bowl, it works great.”➕

“I draw the line at anything glossy, or that doesn't fall apart in tap water.”➕

Alternatives to bags include not using any bags at all

“Would you be able to not use a bag at all?”➕

Mention of alternatives to using any bags at all.

“I thought we weren’t supposed to use any bags at all.”➕

Discussion on alternatives to compostable bags

“I've just started using brown paper lunch bags to collect my kitchen scraps.”➕

Discussion about alternatives to using compostable bags.

“I got some bags off amazon that work pretty well at keeping in liquids.”➕

“I just take the counter container out every day, no bag, and rinse or wash it when I bring it in.”➕

“Anyone lazier, grosser or have a better idea?”➕

“In terms of environmental stuff, remember your three R’s.”➕

Alternatives to compostable bags discussed

“It’s something of a necessity but yes- I also use brown paper when that’s an option and the wet factor doesn’t play in.”➕

Discussion about alternatives to using bags for composting.

“they're just wasteful and not necessary.”➕

“It doesn't make a soup.”➕

“Obvi that does require available freezer space.”➕

Using paper bags as compost bin liners

“It seems to help soak up some of the extra liquid and keep the compostable bin liner in the bigger bin from breaking down before compost day.”➕

“I get maybe 1 or 2 paper bags a month if I go grocery shopping and forget to bring a bag with me.”➕

“There is probably someone with a whole closet full just hoping to find a use for them!”➕

Discussion on using alternative bags for eco-friendly practices

“this is how I try to be eco-friendly about poo.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’

Freezing compost prevents bag deterioration

“But since there are no juices the bags don't break down.”➕

Mention of other cornstarch bag options available

“There are neat cornstarch bags on Amazon (: I forget the brand, I think it’s something like Kimoyu... the bags are green and yellow.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.

Compostable bags decompose faster in natural environments, which can benefit wildlife.

“Compostable bags decompose faster if left in the natural environment, which can be a good thing in scenarios like plastic bag being stuck on seal’s neck.”➕

Concerns about waste management and pests

“we need them to contain for the entire week prior to pickup or our bins make nice fly friends that buzz around and live in the bins and in our backyard until pickup.”➕

Debate on the legitimacy of compostable plastic claims.

“I can only assume the 'composting' process is so hot it's literally on fire.”➕

“Don’t buy or use plastic that claims to be compostable.”➕