Evidence summary
This guide is a research-based United States framework for checking three end-of-life marketing terms: biodegradable, compostable, and recyclable. It uses current official Federal Trade Commission guidance, Environmental Protection Agency disposal guidance, public standards-owner catalogue records, and current certification-programme pages. Evidence was checked on September 21, 2026. No product, facility, collection programme, home compost pile, recycling line, or laboratory sample was inspected or tested for this article.
The available evidence supports a verification workflow, not a universal disposal answer. A standard test is not the same as product certification. Certification is not the same as local collection or facility acceptance. A collection bin is not proof of final processing. A resin code is not proof of recyclability. A biobased-content label is not an end-of-life route. Unknown or conflicting evidence remains a hold rather than being converted into a favorable conclusion.
Quick answer
Start with the exact item and the exact words. Then ask three separate questions: What does the claim mean? What current evidence applies to this exact item? What route actually exists where the item will be discarded? A claim is not decision-ready until all three layers support the same conclusion.
| Claim | Minimum evidence question | Route question | Common unsafe shortcut |
|---|---|---|---|
| Biodegradable | In which environment, to what extent, by which method, and within what period? | Is that environment the item’s customary disposal route? | Assuming breakdown everywhere or treating the claim as permission to litter. |
| Commercially compostable | Does the exact whole item match a current industrial-composting specification or certification? | Does the local collection programme and receiving facility accept the exact item? | Assuming backyard composting or local acceptance from a logo alone. |
| Home compostable | Does the exact item have current home-compost evidence and documented conditions? | Can the household actually meet those conditions? | Assuming every home pile, climate, season, or practice will produce the same result. |
| Recyclable | Can the exact whole item enter an established recycling system at meaningful market access? | What does the current local programme accept, how must it be prepared, and where does it go? | Treating a resin-identification number or collection bin as proof of recycling. |
If the item, evidence, standard edition, registry record, market access, preparation rule, processor, or local acceptance is unknown, the evidence-safe result is hold, qualify the claim, check the local route, keep using what you have, or make no purchase.
Keep three evidence layers separate
End-of-life claims are easy to overstate because a true statement at one layer can create a broader impression at another. A material can show biodegradation in a controlled test without proving that the finished package is certified. A finished package can be certified for commercial composting without being accepted by a nearby facility. A curbside programme can collect an item without demonstrating that the material is sorted and reprocessed at scale.
| Layer | Record required | What it can establish | What it cannot establish by itself |
|---|---|---|---|
| Claim and item identity | Exact wording, claimant, product, package, component, variant, market, date | What proposition is actually being evaluated | Scientific validity, certification, or disposal access |
| Technical and programme evidence | Current method, specification, edition, whole-item evidence, exact registry entry, scope | A bounded property or programme status for the exact subject | Local collection, facility acceptance, or buyer superiority |
| Local route | Location, collector, accepted item form, preparation, receiving facility or processor where material, checked date | The current disposal route available to the reader | A universal route in other locations or a guaranteed final outcome |
Use the FTC boundary before accepting the headline
The FTC Green Guides page reviewed for this package still presents the 2012 guide text. The FTC opened a review in December 2022 and later extended the comment period. Those review steps are not a final replacement. A release should recheck the official page rather than assuming that either the 2012 text or a proposed change will remain current.
The FTC’s Environmental Claims summary provides several practical boundaries. Compostable claims need competent and reliable scientific evidence for all materials in the item. Degradable claims must be matched to customary disposal and a reasonably short complete-breakdown period. Recyclable claims depend on access to suitable facilities and may require qualification when access is limited. C32 uses those principles as an evidence framework; it does not provide a legal opinion for a particular advertisement or jurisdiction.
| FTC-oriented question | Evidence-safe treatment | Hold condition |
|---|---|---|
| What is the net impression? | Read headline, image, logo, qualifier, placement, and implied disposal route together. | A narrow fact appears to support a broad environmental benefit. |
| Is the whole item covered? | Include coatings, inks, labels, closures, adhesives, fillers, and attachments. | Only one material or component has evidence. |
| Is the environment named? | State industrial compost, home compost, soil, marine laboratory, landfill, or another exact condition. | “Biodegradable” is presented without an environment. |
| Is the timeframe supported? | State the tested or claimed period and what “complete” means. | Customary disposal is landfill, incineration, or recycling but complete-breakdown timing is absent. |
| Is recycling access sufficient? | Record actual market access and use a qualification when access is limited. | An unqualified claim is made from a resin code or isolated programme. |
“Biodegradable” needs an environment, method, extent, and time
Biodegradation is not one universal property that produces the same result in soil, industrial composting, a home pile, freshwater, seawater, landfill, or open litter. Temperature, oxygen, moisture, microbial community, material thickness, formulation, surface area, and test duration can change the result. For that reason, an environment-specific laboratory result should stay environment-specific.
| Evidence route | Bounded meaning | What it does not prove |
|---|---|---|
| ASTM D5338-15(2021) | Controlled aerobic biodegradation under thermophilic composting conditions | Product certification, local facility acceptance, or home composting |
| ASTM D5988-18(2025) | Laboratory biodegradation in soil under stated conditions | Landfill breakdown, marine breakdown, or an unqualified general claim |
| ASTM D6691-24a | Laboratory aerobic biodegradation in a marine environment under stated conditions | Permission to litter, actual shoreline fate, or municipal disposal |
| Landfill or customary solid-waste claim | Requires evidence tied to customary disposal, complete breakdown, and the claimed timeframe | A general conclusion from compost, soil, or marine testing |
The safest reader-facing wording names the exact result: for example, a percentage or extent under a named method and period. It does not turn that result into “will disappear anywhere,” “safe for the environment,” or “okay to throw away outside.”
Commercial and home composting are separate decisions
The EPA’s plastic recycling and composting FAQ distinguishes compostable from merely biodegradable and distinguishes commercial from home composting. Industrial facilities use controlled conditions that a household pile may not reproduce. Conversely, a home-compost route does not automatically establish acceptance by a commercial facility.
| Question | Commercial composting | Home composting |
|---|---|---|
| Evidence identity | Current industrial/municipal-compost specification or exact commercial certification | Current home-compost evidence or exact home-certification route |
| Operating conditions | Facility-controlled temperature, aeration, moisture, residence time, screening, and feedstock rules | Actual household climate, pile management, temperature, moisture, season, and time |
| Access question | Collection programme and receiving facility accept the exact item | The household can meet the documented conditions and understands the remaining material |
| Prohibited inference | “Commercially compostable” therefore works in every backyard pile | “Home compostable” therefore every commercial facility accepts it |
A commercial-compostability record can be technically current while the disposal instruction remains blocked. EPA notes that commercial composting access is limited in many places and that some facilities do not accept compostable serviceware. The local programme and the receiving facility therefore remain part of the claim record.
Match the current standard to the exact item construction
Standard numbers are not interchangeable. Record the edition, exact scope, and whether the item as sold fits that scope. A test method measures a property under stated conditions. A specification defines requirements. A certification programme adds its own criteria and registry. None of those layers alone creates local acceptance.
| Current record reviewed | Primary scope | Boundary that must remain visible |
|---|---|---|
| ASTM D6400-26 | Plastics designed for aerobic composting in municipal or industrial facilities | Does not itself prove exact-item certification or facility acceptance |
| ASTM D6868-21 | Items incorporating plastics or polymers with compostable substrates | Construction, coating, and substrate scope must match |
| ASTM D8410-22 | Certain cellulosic-fiber-based packaging intended for municipal or industrial composting | Scope exclusions, including certain thermoplastic-laminated constructions, matter |
| ISO 17088:2021 | Specifications for plastics suitable for organic recycling in industrial composting | Does not establish litter biodegradation or small-scale home composting |
The older ISO 17088:2012 catalogue record is withdrawn. ASTM also has revision work under way for D8410. A work item is not a new published edition. The release check should therefore compare the exact item evidence with the latest issued edition, not a remembered number or a draft revision.
Verify certification at the exact-product level
The Biodegradable Products Institute certification programme is one current verification route reviewed for this guide. The BPI catalog is the product-level check. Commercial listings and home-compostability indicators are distinct. A brand name, marketing badge, supplier letter, or certified component is not enough to prove that the assembled item and exact variant are currently certified.
| Field | What to retain | Failure treatment |
|---|---|---|
| Programme | Official owner, current criteria, route, and market | Do not infer the programme from a look-alike logo |
| Exact product | Brand, item name, SKU/variant, package configuration, certificate or catalog entry | Brand-only evidence remains a hold |
| Route | Commercial or home; relevant standard/specification and edition | Do not merge commercial and home claims |
| Whole-item scope | Substrate, coating, adhesive, ink, label, closure, additive, and attachments | Component evidence cannot cover the assembly |
| Status and date | Current catalog state, applicable criteria, checked date, and material programme changes | Stale or withdrawn entries remain blocked |
| Local route | Collector, facility, accepted item form, preparation, and checked date | Certification alone does not produce a disposal instruction |
BPI also publishes approved laboratory and chemical-criteria information. Those programme layers show why a single biodegradation test is not the whole certification decision. They still do not prove that a particular municipality or processor accepts the item.
“Recyclable” requires more than a symbol
The EPA advises readers to check local programmes because accepted materials and preparation differ. A plastic resin-identification symbol helps identify a material family; ASTM D7611/D7611M-26 does not make the symbol a guarantee of collection, sorting, reprocessing, or end-market demand. The symbol should not be treated as a universal “recycle code.”
| Checkpoint | Question | Why it matters |
|---|---|---|
| Whole item | Are all components compatible with the claimed route, or must they be separated? | One recyclable component cannot support the whole assembly. |
| Collection | Does the current local programme accept this exact item form? | A programme elsewhere is not the reader’s route. |
| Preparation | Must the item be clean, dry, empty, detached, flattened, bagged, or taken to a drop-off? | Preparation can determine acceptance and contamination. |
| Sorting and processor | Is the material separated and sent to a viable processing route? | Collection alone does not prove final processing. |
| Market access | Is access sufficient for the breadth of the marketing claim? | Limited access requires qualification or a hold. |
| Checked date | When were programme and processor rules verified? | Contracts, markets, equipment, and contamination rules change. |
When access is limited, the claim should be qualified to the actual route. When only a resin code is known, the supported conclusion is material identification—not recyclability. When downstream processing is disputed or unknown, say so rather than converting collection into a recycling outcome.
Do not move an item into the wrong stream
EPA guidance says compostable plastics should not be placed in conventional plastic recycling because they can contaminate that stream. The opposite shortcut is also unsafe: a recyclable-looking item should not be put into an organics programme unless that collector and facility accept it. The wording on the item does not override current local instructions.
| Item evidence | Proposed stream | Evidence-safe result |
|---|---|---|
| Commercially compostable, exact certification current | Conventional plastic recycling | Do not place there unless the local programme explicitly accepts that item in that stream. |
| Resin code only | Curbside recycling | Check the exact local item-form rule; code alone is insufficient. |
| Home-compost certification | Commercial organics collection | Check collector and facility; home evidence is not commercial acceptance. |
| Commercial-compost certification | Backyard pile | Do not infer home performance. |
| Retailer take-back label | Municipal recycling | Follow the exact retailer programme instead; do not relabel the route. |
| No verified route | Any stream based on hope | Hold, use ordinary local instructions, keep existing, or make no purchase. |
Biobased is not an end-of-life claim
The USDA BioPreferred programme uses biobased content as a feedstock or material-content attribute. The USDA Certified Biobased Product label does not by itself establish biodegradability, compostability, recyclability, safety, toxicity, carbon superiority, or local disposal access.
| Available evidence | Permitted conclusion | Unsupported conclusion |
|---|---|---|
| Current programme-defined biobased-content record | The exact subject has the verified programme attribute | The item will biodegrade in landfill, soil, water, or compost |
| Biobased component only | The component has the stated attribute | The whole product has the attribute |
| Biobased content plus commercial-compost certification | Two distinct bounded attributes may be stated | Local facility acceptance or overall environmental superiority |
| No end-of-life evidence | End-of-life remains unknown | A favorable disposal route |
Verify the local route before giving disposal advice
A reader-facing disposal answer should be location-specific and dated. Start with the official municipal, hauler, retailer, utility, or facility source that controls the route. When a collector and a processor are different organizations, record both when the distinction is material. When a programme accepts an item only at a drop-off, do not describe it as curbside acceptance.
| Step | Record | Stop condition |
|---|---|---|
| 1. Identify the item | Exact product/package, material construction, components, labels, coatings, condition | Identity or whole-item scope is unclear |
| 2. Identify the claim | Exact words and claimed route | Broad “eco” wording substitutes for a route |
| 3. Verify technical evidence | Current method/specification, edition, result, exact certification/catalog record | Evidence is absent, stale, conflicting, component-only, or mismatched |
| 4. Verify collection | Official local programme, address eligibility, item form, curbside/drop-off/retailer route | Only a national example or resin code is available |
| 5. Verify preparation | Cleaning, separation, labels, closures, bags, liners, food residue, size limits | Preparation is unknown |
| 6. Verify receiving route | Facility or processor acceptance where the claim depends on it | Collection is known but downstream route is disputed or unknown |
| 7. Date the result | Absolute checked date and recheck trigger | Programme, standard, certification, or market changed |
If a location-specific route cannot be verified, the article should not improvise. A bounded result can say that the material evidence is current while local disposal remains unresolved. That is more useful than a confident instruction that sends an item into the wrong stream.
Examples of evidence-safe outcomes
| Evidence set | Permitted outcome | Not permitted |
|---|---|---|
| Exact commercial certification and whole-item match; local facility unknown | Commercial-compostability evidence is current; local disposal instruction is held | “Put this in your compost bin” |
| Exact home certification and documented conditions | Home-compost candidate under stated conditions | Guaranteed result in every backyard pile |
| Resin code and no local item-form rule | Material identification only; local recycling check required | “Widely recyclable” |
| Local curbside acceptance, preparation known, processor route current | Bounded local recycling instruction for exact item and date | Universal recyclability |
| Soil biodegradation test with numeric result | Bounded result under named soil test conditions | Landfill, marine, compost, or littering conclusion |
| USDA biobased-content label only | Biobased-content attribute | Biodegradable, compostable, recyclable, non-toxic, or low-carbon outcome |
| Conflicting registry or local-program records | Hold conflict and recheck | Choose the favorable record |
Unknowns and stop conditions
- Unknown item identity: do not transfer a brand-level or material-level claim to a variant.
- Unknown whole-item scope: do not use one component’s evidence for the assembled item.
- Unknown edition: do not cite a standard number without confirming the current edition and exact scope.
- Unknown registry state: hold certification language until the exact current entry is found.
- Unknown local collection or facility: hold the disposal instruction.
- Unknown preparation: do not assume labels, closures, coatings, food residue, bags, or mixed materials are accepted.
- Conflicting evidence: retain both observations and state the conflict.
- Legal conclusion requested: route to qualified legal review; this guide does not decide compliance or enforcement.
How the private routing method works
The private method is deterministic, non-scoring, and fail-closed. It validates one exact claim record, preserves unknowns, and applies hard gates before returning a route. Synthetic fixtures test the software logic only; they are not product, laboratory, facility, or municipal evidence.
| Output family | Meaning | Authority not created |
|---|---|---|
| Commercial or home compost candidate | Exact technical route passed; commercial disposal still requires verified local acceptance | Certification, facility, legal, publication |
| Recycling candidate or qualified claim | Exact item, stream, preparation and market evidence support the bounded result | Universal recyclability or guaranteed processing |
| Bounded environment-specific evidence | A soil, marine, compost or other result remains tied to its method and conditions | Disposal instruction outside those conditions |
| Local-route verification | Technical evidence exists but collection, facility, or preparation is unresolved | Favorable default |
| Hold, incompatible, keep existing, or no purchase | A material gate failed or added complexity is not justified | Product recommendation |
| Legal review required | A legal or enforcement conclusion was requested | Legal opinion from this article |
Recheck before release
Reopen or refresh the packet when the FTC issues final Green Guides changes; ASTM or ISO publishes a new edition; BPI changes criteria or an exact catalog record; a collector, municipality, retailer, compost facility, or recycler changes acceptance; a product changes materials or construction; or a conflict appears between a claim, registry, and local route. Critical correction triggers override the ordinary review interval.
Bottom line
Biodegradable needs an exact environment, method, extent, and time. Compostable needs the correct commercial or home route, current whole-item evidence, and—before a disposal instruction—an actual accepted route. Recyclable needs more than a symbol: the exact item, preparation, collection, market access, and processing route must support the breadth of the claim. When one layer is missing, narrow the claim or hold it. Do not let a test, logo, resin code, or biobased label answer a different question than the evidence actually supports.