Scope: Garbage & Bin Bags = plastic/paper trash and bin liners for household and household-adjacent use — kitchen/wastebasket, outdoor/yard&leaf, contractor/heavy-debris, and compostable food-scrap bags — split by primary_use since each type is judged on different specs.

Seed: Equivalent of harvest_date here is thickness_gauge_class/material_resin together — the number on the bag (mil or micron) means nothing until you know which resin it's measuring, exactly like a best-before date means nothing without the harvest date. A persona that thinks in origin/process/change-over-time would notice first that the category runs two incompatible thickness units (mil vs micron) for two resins with opposite failure modes, and that "biodegradable," "oxo-biodegradable," and "ASTM D6400 compostable" are three different, often-confused claims.

Sources:
[wcsafety_mil_guide] https://wcsafety.com/blogs/reference/trash-bag-mil-thickness-guide — LLDPE/HDPE gauge-by-duty tables, 1 mil=25.4 micron conversion, size table — fetched excerpt
[plasticplace_dictionary] https://www.plasticplace.com/pages/trash-bag-dictionary — gauge range 0.7-2.0 mil / 6-22 micron, seal defs, resin defs, overhang — fetched excerpt
[cleansource_guide] https://cleansourceinc.com/the-ultimate-guide-to-choosing-the-right-commercial-garbage-bag/ — seal defs, duty-by-use recs, HDPE-favoring resin claim (minority) — fetched excerpt
[wiki_binbag] https://en.wikipedia.org/wiki/Bin_bag — history, closures, resins, oxo-biodegradable def — fetched excerpt
[wiki_compostable] https://en.wikipedia.org/wiki/Biodegradable_polymer — ASTM D6400 definition, 90%/180-day criterion — fetched excerpt
[orizon_compost_guide] https://orizonbags.com/best-compostable-trash-bags-ultimate-guide/ — BPI/ASTM D6400 vs OK compost HOME across brands, 0.6-1 mil compost-bag thickness — fetched excerpt
[hefty_ultrastrong_kitchen] https://www.hefty.com/products/trash-bags/ultra-strong-kitchen-trash-bags — drawstring, Arm & Hammer odor tech, scent list, not recyclable — fetched excerpt
[hefty_recovered_materials] https://www.hefty.com/products/trash-bags/recovered-materials-bags — 50% recovered = 20% post-consumer + 30% reclaimed scrap — fetched excerpt
[ifyoucare_recycled_product] https://ifyoucare.com/products/recycled-trash-bags — 89% recycled post-consumer material — fetched excerpt
[wiki_leafbag] https://en.wikipedia.org/wiki/Leaf_bag — paper vs plastic leaf bags, municipal requirement — fetched excerpt
[fairfax_yardwaste] https://www.fairfaxcounty.gov/publicworks/recycling-trash/yard-waste — county bans plastic bags for yard waste, requires paper — fetched excerpt

Branches:
primary_use=kitchen_wastebasket → closure_type, scent — kitchen bags are judged on scent/fit (hefty_ultrastrong_kitchen)
primary_use=outdoor_yard_lawn_leaf → material_resin — many municipalities ban plastic for yard waste (wiki_leafbag, fairfax_yardwaste)
primary_use=contractor_heavy_debris → thickness_gauge_class, material_resin — debris needs mil/resin, not scent (wcsafety_mil_guide, cleansource_guide)
primary_use=compost_food_scraps → compostable_certification — governed by ASTM D6400/BPI, not thickness (orizon_compost_guide, wiki_compostable)

Noise:
Price, brand, star rating — excluded per rule.
Box/roll count per package — generic listing metadata, not an expert judgment call.
Ply count (single/2-ply/3-ply) — only wiki_binbag mentions it historically, no second source; dropped.
Compactor-tubing bag format — appeared only in a product title, no spec source fetched; not covered.
Exact box dimensions (width x length inches) — folded into capacity_gallons rather than a separate facet; sizing math shown in wcsafety_mil_guide.
UPC/case-pack data — retailer logistics, not buyer-facing expertise.

Corrections (2026-10-26):
- Rewrote derived_metrics.thickness_mil_equivalent to look up a mil midpoint directly from thickness_gauge_class's own bands (0.8/1.25/2.0/3.0 mil) instead of a micron/mil branch keyed on material_resin, so it's computable from the facets as modeled; dropped material_resin from depends_on.
- Replaced rodent_pest_resistant's evidence (wcsafety_mil_guide, which never mentions rodents) with a new reference, mintx_rodent_repellent, fetched and confirmed to name rodent-repellent trash bags directly.
- Added facet end_of_life_recyclability (bag material recyclability, distinct from box recyclability and from recycled_content_tier/compostable_certification), evidenced by hefty_ultrastrong_kitchen plus a new reference wiki_plasticbag confirming film bags are generally excluded from curbside recycling; added its vocabulary term "Store drop-off (film recycling)".
- Added a standalone vocabulary entry for oxo_biodegradable_additive (previously undefined), sourced from wiki_binbag's existing fetched text.
- Added a standalone vocabulary entry for LDPE to match the existing HDPE/LLDPE entries, sourced from plasticplace_dictionary's existing fetched text.