Why "eco-friendly" on a label means nothing

There is no FTC rule that defines "eco-friendly." There is one that defines "compostable." Most labels reach for the first word and avoid the second. There is a reason for that.

The Federal Trade Commission's Green Guides do tell brands what claims like "biodegradable," "compostable," and "recyclable" can legally mean. The Guides are advisory, not directly enforceable, but they're the closest thing to a federal rulebook for this category. The brands that take the rules seriously get certified. The brands that don't lean on words like "eco-friendly," "earth-conscious," "natural," and "green" because none of those words mean anything specific in court.

Here is how to read a compostable bag in ten seconds.

What "eco-friendly" actually means

Legally, almost nothing. There is no minimum bio-content. No required compostability. No required recycled content. No required life-cycle analysis. A bag wrapped in green leaves and the word "eco-friendly" can be 100% fossil-fuel plastic with no end-of-life claim attached. That's not a loophole. That's the default.

The same goes, mostly, for:

• Biodegradable (without further qualification): the FTC Guides require that any biodegradability claim apply to a reasonable disposal environment and a reasonable timeframe. Brands that meet that bar usually use the word "compostable" instead, because compostable is the more specific and more defensible term. A loose "biodegradable" label, on its own, is usually a yellow flag.
• Plant-based: meaningful as a description, meaningless as a standard. (See our [materials post].)
• Sustainable / earth-conscious / natural: marketing language. No technical definition exists.

The four certifications that actually mean something

If a bag is certified to one of these, an independent third party has tested it against a real standard.

BPI (Biodegradable Products Institute)

The dominant North American certification. BPI tests against ASTM D6400 (for items that touch food, like bags) and ASTM D6868 (for coated paper products). A BPI mark on a bag means it has passed independent lab testing for industrial composting performance, disintegration, and eco-toxicity. This is the certification you see most often in the US.

ASTM D6400 / D6868

The underlying US technical standards that BPI and others certify against. D6400 requires around 90% biodegradation within 180 days under industrial composting conditions, complete disintegration, and that any residue not show ecotoxicity to plants or earthworms. D6868 covers products with a compostable coating on paper or board.

OK Compost / OK Compost Home (TÜV Austria)

The European certifications you'll see referenced on imported or premium bags. OK Compost is industrial; OK Compost Home covers backyard performance at ambient temperatures (around 25 °C) over roughly 12 months. If a bag claims home compostability, this is the certification to look for. ASTM does not yet publish a comparable US home compost standard.

CMA (Compost Manufacturing Alliance)

A field certification rather than a lab one. CMA tests products at actual working composting facilities to confirm they break down on commercial timelines. Where BPI confirms the chemistry, CMA confirms the practice. Some municipal organics programs require CMA approval, not just BPI.

How to read a bag in ten seconds

A useful mental checklist when you pick up a bag in a store:

1. Does it say "compostable" specifically? "Eco-friendly," "biodegradable," and "green" are not substitutes.
2. Is there a certification mark? BPI, ASTM D6400 / D6868, OK Compost, OK Compost Home, or CMA. If yes, check which environment the certification covers (industrial vs home).
3. Does the certification match where you'll send the bag? A BPI-certified bag works for curbside organics and industrial facilities. For a backyard pile, you need OK Compost Home or DIN-Geprüft.
4. Is the bio-content disclosed? Optional but worth bonus points. A brand that's confident in their formulation usually says what's in it.
5. If it's vague, treat it as conventional plastic. A bag that hides its materials and avoids certification is almost always doing so on purpose.

That's it. Ten seconds, four boxes.

What we carry

For full transparency, the certifications on our bags:

• ASTM D6400 (industrial compostability)
• BPI certified
• OK Compost Home (home compostability)
• CMA listed (field-tested at working composting facilities)

We list these because the only honest answer to "is this bag better" is to show the receipts. Words like "eco-friendly" cost nothing and prove nothing. A real third-party certification means a lab and a facility have done the work, and a brand has chosen to be measured against a standard it could fail.

That's the bar. Anything below it is, at best, a wish.

Frequently asked questions

What's the difference between biodegradable and compostable?

Biodegradable, by itself, is a loose term: it only means that something will eventually break down through biological activity. Compostable is a specific subset, certified against standards like ASTM D6400 that require near-complete biodegradation in a defined timeframe and environment, with no toxic residue. Compostable is meaningful. Biodegradable, on its own, often isn't.

Is the BPI mark enough on its own?

For industrial composting and most curbside organics programs, yes. BPI certification confirms the bag meets ASTM D6400. For home composting, you'd want to additionally look for OK Compost Home or DIN-Geprüft. For acceptance at a specific facility, CMA approval is a stronger guarantee.

Why do some compostable bags carry European certifications instead of US ones?

OK Compost (and especially OK Compost Home) are widely recognized worldwide and predate any equivalent US home compost standard. Many brands certify under both BPI and OK Compost so the same bag can claim industrial and home compostability across markets.

Can a bag be both compostable and recyclable?

Almost never. Compostable plastics are designed to break down in active microbial environments and they contaminate conventional plastic recycling streams. A bag is one or the other. If a label claims both with no qualifier, that's a red flag.