4 gallon compostable trash bags
Skip itA small market ($61K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Conversion
Incredible14.2%search→purchase rate — share of searches ending in a sale
Avg price
Good$14.80avg listing price — sweet spot $15–$100
Price range
Good$6.80–$29.87cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad5,923.27avg incumbent reviews — the moat a new listing must climb
Growth
Bad-16.9%90-day search growth — must beat 0% to launch
Market size
Bad$61K$61K/yr · 29K searches
According to Flapen's Amazon United States niche tracking, 4 gallon compostable trash bags is a $61K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Apr. Verdict: Skip it — 47/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
4 gallon compostable trash bags market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $44K–$59K
- units × avg price
- Conversion rate
- 14.2%
- Avg BSR
- #330
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 82%
- Out of stock
- 7.4%
- Avg brand age
- 41 months
- Avg seller age
- 158 days
Competition & brand share
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
20
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
61%
Top 20: 99%
Open market
17%
- Inwaysin31%
- UNNI21%
- AYOTEE12%
- superbio9%
- Rishpahu5%
- Aklyaiap4%
- Open — no brand owns it (7 brands, 17%)
Demand & seasonality
Weekly Amazon search volume, last 101 weeks — -16.9% search growth over the last 90 days.Peak months: Apr · busiest ÷ quietest = 1.7×
Top 4 gallon compostable trash bags search terms
- 4 gallon compostable trash bags7K/yr
- compostable trash bags 4 gallon5K/yr
- biodegradable small trash bags 4 gallon4K/yr
- 4 gallon biodegradable trash bags4K/yr
- compost bags 4 gallon4K/yr
- biodegradable trash bags 4 gallon3K/yr
- 4 gallon green compostable bag2K/yr
Top 4 gallon compostable trash bags products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Small Trash Bags 4-6 Gallon Inwaysin 200 Count Biodegradable Trash Bags 4 Gallon Extra Strong Small Garbage Bags Unscented Size Expanded Green for Bathroom Bedroom Office Kitchen Trash Can
Inwaysin$14.114.5★5,242 rev
UNNI Compostable Trash Bags 4 Gallon / 15 Liter 100 Count Extra Thick 0.75 mil Small Kitchen Food Scrap Bin Liners Certified by BPI CMA & OK compost HOME Meets the ASTM D6400 Standard
UNNI$16.914.6★46,592 rev
SUPERBIO 4 Gallon Compostable Drawstring Food Scrap Bags 15.1 Liter 40 Count 0.9 Mil Heavy Duty Waste Bags BPI Seedling and OK compost INDUSTRIAL
superbio$21.194.5★650 rev
AYOTEE Compostable Trash Bags 4 Gallon Drawstring Trash Bags 100 Counts Ultra Strong Unscented Garbage Bag Small TrashBags Waste Basket Liners for Bathroom Kitchen Car Pet
AYOTEE$17.694.5★902 rev
Small Trash Bags AYOTEE 4-6 Gallon Compostable Garbage Bags 4 Gallon Trash Bags Unscented Leak Proof Biodegradable Bags Wastebasket Liners Bathroom trash bags Compost Bags (100 Counts Blue)
AYOTEE$11.714.5★2,234 rev
Newest
by launch date
OrangeBio 4 Gallon Compostable Trash Bags 100 Count Small Bin Liners for Kitchen Bathroom & Food Waste Plant-Based Garbage Bags BPI & TV OK Compost Home Certified
OrangeBio$18.793 rev
KeenEcho 4 Gallon 200 Counts Small Green Trash Bags with Handle Ocean Fishing Nets Upcycling Sage & Sea Salt Scented Plastic Garbage Bags Waste Bag for Kitchen Bathroom Office and Pets
KeenEcho$17.33109 rev
4 Gallon Biodegradable Compostable Small-Trash-Bags - Green Small Garbage Bags For Bathroom Can 100 Count Unscented Little Waste Basket Kitchen Office Car Tiny Liners Bulk Strong Thick Inwaysin
Inwaysin$6.89378 rev
The Gardeners Daughter Compostable 4 Gallon Trash Bags Small Drawstring Garbage Bags for Bathroom Office Bedroom - Leak-Proof Durable Fits Small Wastebaskets 90 Count
The Gardener's Daughter$23.7347 rev
SUPERBIO 4 Gallon Compostable Drawstring Food Scrap Bags 15.1 Liter 40 Count 0.9 Mil Heavy Duty Waste Bags BPI Seedling and OK compost INDUSTRIAL
superbio$21.19650 rev
Trending
90-day click momentumKeenEcho 4 Gallon 200 Counts Small Green Trash Bags with Handle Ocean Fishing Nets Upcycling Sage & Sea Salt Scented Plastic Garbage Bags Waste Bag for Kitchen Bathroom Office and Pets
KeenEcho$17.334.6★
OrangeBio 4 Gallon Compostable Trash Bags 100 Count Small Bin Liners for Kitchen Bathroom & Food Waste Plant-Based Garbage Bags BPI & TV OK Compost Home Certified
OrangeBio$18.794.3★
ANECO 4 Gallon Compostable Food Waste Bags with Handles 30 Count
ANECO$14.924.5★
4 Gallon Small White Biodegradable Trash-Bag - Small Garbage Bags For Bathroom Can Unscented Compostable Kitchen Office Car Waste Basket Liners 100counts 15l Bulk Chenyucheng
Chenyucheng$6.804.1★
4 Gallon Biodegradable Compostable Small-Trash-Bags - Green Small Garbage Bags For Bathroom Can 100 Count Unscented Little Waste Basket Kitchen Office Car Tiny Liners Bulk Strong Thick Inwaysin
Inwaysin$6.894.5★
What buyers say about 4 gallon compostable trash bags
What buyers praise and complain about, mined from review topics.What buyers love
“they fit well”
“Great for environment”
“Sturdy and durable”
“Excellent product”
“Good price”
“Easy open”
“durable these bags are”
“They dont leak”
“As advertised”
“keep it clean”
What buyers complain about
“The plastic material is fairly thin”
“Bags are too small”
“may not be as durable”
“Not very strong”
“Leak”
“These are priced a little high”
“The smell does not leave the green trash bags until I can take the kitchen garbage out”
“Not the truly biodegradable for home compost or landfills”
“Too thin”
“These bags are not the same quality I purchased last time”
Top return reasons
Common questions
- Is 4 gallon compostable trash bags profitable to sell on Amazon United States?
- The niche generates $61K/yr across 22 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -16.9%. Flapen's verdict: Skip it (47/100).
- How competitive is the 4 gallon compostable trash bags niche?
- 13 brands and 20 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in 4 gallon compostable trash bags?
- Top complaints mined from reviews: Thickness, Size-Overall, Durability. The return rate is 0.4%.
- When does demand for 4 gallon compostable trash bags peak?
- Demand peaks in Apr; the busiest month runs 1.7× the quietest.
- What does it cost to enter the 4 gallon compostable trash bags niche?
- Listings span $6.80–$29.87; the average listing price is $14.80 (sweet spot $15–$100). The average incumbent carries 5,923 reviews — the moat a new listing must climb.