Pet N Pet vs Greener Walker Poop Bags: 2026 Buyer’s Comparison
If you have been browsing Amazon for dog waste bags, you have almost certainly seen both of these brands. Pet N Pet and Greener Walker dominate the eco-segment of the poop bag category, both with 40,000+ reviews, both positioned around environmental credentials, and both available in 1,000+ bag bulk formats.
The question is what is actually different between Pet N Pet vs Greener Walker poop bags, and whether those differences matter for your dog, your wallet, and your environmental values. This comparison breaks both brands down on the six criteria that actually determine which bag you should buy: certification type, material composition, durability, cost per bag, FTC compliance, and the key certification differences between these brands
Brand Overview: What Each Company Actually Is
Pet N Pet
Pet N Pet is a US-marketed pet supplies brand with a direct-to-consumer website at petnpet.us and strong Amazon presence. Their flagship differentiator is the USDA Certified Biobased designation, a US federal government programme that independently tests and certifies the percentage of a product derived from plant-based renewable sources.
Pet N Pet's standard 1,080-count bags carry 41% USDA Certified Biobased content. A 92% biobased SKU is also available, making it one of the highest-certified options in the category.
Pet N Pet does not claim their bags are biodegradable or compostable, a more conservative certification approach, given that FTC Green Guides SS260.8 prohibits unqualified biodegradable claims for bags destined for standard landfill disposal.
Greener Walker
Greener Walker is an Amazon-first brand sold under the YORJA seller account, fulfilled by Amazon FBA. Their lead SKU is a 540-count cornstarch-blend bag that has accumulated 40,000+ reviews, primarily through sustained sales volume and Amazon's review-weighting algorithm. They hold EN 13432 (European industrial composting standard) and ASTM D6400 (US industrial composting standard) certifications.
Greener Walker positions primarily on 'biodegradable' and 'eco-friendly' language. Their material is a corn starch blend, which does have composting properties under controlled industrial conditions, but as confirmed by both an Amazon reviewer and a CNN Underscored product test, durability is a documented weakness, and the biodegradable claim carries FTC legal risk for bags that end up in standard landfill rather than an industrial composting facility.
Pet N Pet vs Greener Walker: Full Comparison
| CRITERIA | PET N PET | GREENER WALKER |
|---|---|---|
| Material | 41% USDA Certified Biobased plant-derived content + 59% polyethylene | Corn starch blend (cornstarch-based bioplastic), exact % not published |
| Primary Certification | 41% USDA Certified Biobased, US government verified | EN 13432 + ASTM D6400 (European & US industrial composting standards) |
| US Govt Certification? | YES, USDA BioPreferred Program. Independently lab tested. | NO, No USDA Biobased certification held |
| Biodegradable claim? | Not claimed, honest, FTC-compliant position | 'Biodegradable' used in listings, FTC SS260.8 risk for landfill-bound bags |
| Bag size | 9" x 13" | 13" x 9" (same dimensions, labelled L x W) |
| Best count option | 1,080 bags / 60 rolls | 540 bags / 36 rolls (lead SKU); 1,080 also available |
| Cost per bag (best pack) | ~$0.02 (1,080 ct) | ~$0.02-0.03 (540 ct); ~$0.016-0.02 (1,080 ct) |
| Thickness | 15 microns (premium tier) | Not publicly disclosed, confirmed thin by CNN Underscored test |
| Durability (third-party test) | No CNN rip failure on record | CNN Underscored test: 'ripped very easily due to thin cornstarch-based material' |
| Cold weather performance | Standard | Customer reviews flag bags that stick together and are difficult to open in cold |
| Scent options | Lavender scented + unscented | Multiple colour options; limited scent data published |
| Amazon reviews (lead SKU) | 46,000+ (Pet N Pet, combined) | 40,000+ (540-ct lead SKU) |
| DTC website | petnpet.us, full Shopify store | greenerwalker.com, minimal organic traffic |
| FTC compliance risk | Low, USDA cert + no biodegradable claim | Elevated, 'biodegradable' language in listings conflicts with FTC SS260.8 |
Certification: Why USDA Biobased and ASTM D6400 Are Not the Same Thing
Both brands carry eco certifications. They are not equivalent, they measure completely different things.
| CRITERIA | PET N PET | GREENER WALKER |
|---|---|---|
| Certification name | USDA Certified Biobased (41%) | EN 13432 + ASTM D6400 |
| Issued by | US Government, USDA BioPreferred Program | European composting body + BPI (US composting) |
| What it certifies | 41% of material from plant-derived renewable sources | Will break down in industrial composting within 180 days |
| Claims about material input? | YES | Partial |
| Claims about end-of-life? | NO, honest non-claim | YES, only in industrial composting |
| Works in standard landfill? | No, and does not claim otherwise | No, and 'biodegradable' claim for landfill = FTC risk |
The key takeaway: USDA Certified Biobased certifies what the product is made from. EN 13432/ASTM D6400 certifies what the product can do under industrial composting conditions that most US households cannot access. For a bag that ends up in standard municipal solid waste, which is the reality for the vast majority of US pet owners, the USDA certification is the more practically meaningful and legally safer credential.
Durability: The CNN Underscored Test and What It Means
Durability is the most practically important spec for a poop bag, because a bag that tears under load costs you double. You need two bags, you risk contamination, and you end up buying more.
The cornstarch-based material that gives Greener Walker its composting credentials is also the source of its structural weakness. Cornstarch bioplastics behave differently from polyethylene under stress, they can become brittle in cold temperatures and are more susceptible to tearing under the point-load stress of a heavy pickup.
Multiple Amazon reviews for Greener Walker's lead SKU independently confirm two failure modes:
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Cold weather sticking: bags stick together in cold temperatures, making them difficult to open on winter walks
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First-roll perforation failure: the sticker seal on new rolls tears the bag on opening, a batch issue but a documented pattern in reviews
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Thin material feel: multiple reviews describe the bags as thinner than alternatives, consistent with the CNN test results
Pet N Pet publishes a 15-micron thickness specification for the premium 1,080-count tier, a spec Greener Walker does not disclose. As established in independent testing across the category, 15 microns is the recommended minimum for reliable large-breed use without double-bagging.
Cost Per Bag: Which Brand Gives You More for Your Money?
Price per bag at scale is the most practical financial metric for regular dog owners. The numbers below are based on published Amazon and retailer pricing.
| Brand | Count | Cost/Bag | Notes |
|---|---|---|---|
| Pet N Pet (best value) | 1,080 | ~$0.02 | USDA 41% certified; Subscribe & Save ~$0.012 |
| Pet N Pet (mid pack) | 270 | ~$0.05 | Standard refill size |
| Greener Walker (lead SKU) | 540 | ~$0.020-0.024 | EN 13432 cert; no USDA biobased cert |
| Greener Walker (1,080 ct) | 1,080 | ~$0.016-0.019 | Additional SKU; fewer reviews than 540-ct |
At the best available pack size, Pet N Pet costs approximately 30–40% less per bag than Greener Walker's lead 540-count SKU. For a household using two bags per walk, one walk per day, that difference amounts to roughly $15–25 per year, and at 1,080-count, one Pet N Pet order covers approximately 18 months of daily single-dog walks.
FTC Green Guides Compliance: Why Greener Walker's 'Biodegradable' Claim Is a Risk
The FTC Green Guides (16 CFR Part 260) regulate how environmental claims can be made on consumer products. Section 260.8 specifically addresses biodegradable claims for items entering the solid waste stream.
This is not a hypothetical risk. The FTC sent warning letters to 20 poop bag manufacturers in 2015 over biodegradable and compostable claims. Several pet waste bag brands have faced legal scrutiny over biodegradable marketing claims.
Greener Walker's cornstarch blend has genuine composting properties under controlled industrial conditions, but that is not the same as biodegrading in a landfill, and the FTC makes this distinction explicitly.
Pet N Pet takes a more conservative certification approach: they state '41% USDA Certified Biobased', a specific, government-verified content claim, and explicitly do not claim the bags are biodegradable or compostable. That honesty is not a limitation. It is legal compliance, and it is what distinguishes a brand that will withstand an approach aligned with current FTC Green Guides.
Pet N Pet vs Greener Walker: Who Wins for Your Situation?
| If Your Priority Is... | Winner | Why |
|---|---|---|
| US government-verified certification | Pet N Pet | Pet N Pet is one of the few brands in this comparison |
| Lowest confirmed cost per bag | Pet N Pet | ~$0.014 at 1,080-count vs ~$0.016-0.02+ for Greener Walker |
| Most bags per order (bulk) | Pet N Pet | 1,080 count available vs Greener Walker's 540-count lead SKU |
| FTC-compliant eco claims | Pet N Pet | No biodegradable claim; USDA cert is legally defensible |
| Certified compostable product | Greener Walker | EN 13432 + ASTM D6400, if composting facility access exists |
| Cornstarch-based material preference | Greener Walker | Corn starch blend is their primary material |
| Third-party durability confidence | Pet N Pet | No CNN Underscored rip failure; 15-micron thickness published |
| Cold weather usability | Pet N Pet | No confirmed cold-weather sticking complaints vs Greener Walker |
There is one scenario where Greener Walker has a legitimate advantage: buyers who have confirmed access to an industrial composting facility that accepts pet waste and specifically want a product certified for that disposal pathway.
EN 13432 and ASTM D6400 are real, meaningful certifications under those conditions. However, the vast majority of US dog owners do not have access to a qualifying composting facility, and Greener Walker's listing language does not make this qualification clear to buyers.
For everyone else, owners who want the lowest certified cost per bag, a US government-verified eco credential, confirmed durability, and FTC-safe claims, Pet N Pet is the better-specified and better-priced option.
Frequently Asked Questions
Are Greener Walker poop bags actually biodegradable?
Greener Walker bags are made from a corn starch blend and hold EN 13432 and ASTM D6400 certifications, meaning they will break down under controlled industrial composting conditions. However, in a standard landfill, where most dog waste bags end up, they cannot biodegrade within 12 months, which means their unqualified 'biodegradable' claim carries risk under FTC Green Guides SS260.8. An Amazon reviewer and CNN Underscored both note this distinction.
Does Pet N Pet hold a biodegradable certification?
No, and that is intentional. Pet N Pet holds a 41% USDA Certified Biobased designation, verified by the US government via ASTM D6866 radiocarbon testing. This certifies the plant-derived origin of the material. Pet N Pet explicitly does not claim biodegradability or compostability, which is the legally correct position for bags destined for standard household waste under FTC Green Guides SS260.8.
Which is cheaper: Pet N Pet or Greener Walker?
Pet N Pet is cheaper at comparable pack sizes. The 1,080-count Pet N Pet pack costs approximately $0.02 per bag. Greener Walker's lead 540-count SKU costs approximately $0.020-0.024 per bag. Greener Walker's 1,080-count SKU is closer but still typically costs $0.03 per bag. At daily use for one dog, Pet N Pet's cost advantage is roughly $10-25 per year.
What is the difference between USDA Biobased and EN 13432?
USDA Certified Biobased (ASTM D6866) certifies the percentage of a product derived from plant-based renewable sources rather than petroleum, a material input claim issued by the US government. EN 13432 certifies that a product will break down under industrial composting conditions, an end-of-life performance standard. Pet N Pet holds the first. Greener Walker holds the second. They are not comparable claims and measure different things.
Did Greener Walker bags fail a durability test?
Yes. CNN Underscored tested 8 poop bag brands and reported that Greener Walker 'ripped very easily due to thin cornstarch-based material' in the asphalt durability test. The bags also stretched under a five-pound weight load. Multiple Amazon reviewers independently note thin bag material, cold-weather sticking, and first-roll seal issues that tear the bag on opening.
Are Pet N Pet bags good for large dogs?
Yes. Pet N Pet's 9" x 13" sizing at 15 microns thickness is the standard large-breed format, sufficient for single-pass pickup without double-bagging for most large and extra-large breeds. The 1,080-count bulk format means fewer reorders for multi-dog households.
Ready to Try the USDA-Certified Option?
Pet N Pet's 41% USDA Certified Biobased poop bags are available directly at petnpet.us and on Amazon. The 1,080-count pack at approximately $0.02 per bag covers 18 months of daily walks for one dog, with a government-verified biobased certification that Greener Walker does not hold, a published 15-micron thickness spec, and no biodegradable claim that conflicts with FTC enforcement guidelines.
