Scope: "Laundry Wash Bags & Frames" bundles two product types experts treat differently — flexible mesh wash bags (zippered/drawstring net pouches that protect delicates during a machine wash) and rigid wash frames (hinged plastic shells, dominated by cap/hat washers, that clamp around a shaped item to hold it through a wash) — split by `product_form`, each with its own facet set.

Seed:
1. Equivalent of harvest_date (expert-first, almost no listing carries it, costly to backfill): `frame_front_load_safety` — the one caution that decides whether the product is safe in a given home's washer at all, but it sits only in a brand's own instruction card, never the listing.
2. What this persona would notice first: that "machine washable" on a rigid frame does not mean any washer — the manufacturer instructions explicitly bar front-loading tumble machines, a mechanical distinction a typical buyer glosses over.

Sources:
[wikipedia_underwire] https://en.wikipedia.org/wiki/Underwire — bra wash bags are zippered mesh pouches that protect the underwire during machine washing — fetched excerpt: "Bra wash bags, usually zippered mesh pouches, can also be used to protect bras and prevent the underwire from separating from the bra during machine washing."
[wikipedia_string_bag] https://en.wikipedia.org/wiki/String_bag — mesh bag construction (strands/yarns/non-woven synthetic net) — fetched excerpt: "Mesh bags are constructed from strands, yarns, or non-woven synthetic material into a net-like structure."
[ballcapbuddy_how] https://ballcapbuddy.com/how-it-works/ — frame opening mechanism, wash-method limits, dryer prohibition — fetched excerpt: "Open the frame by pushing the center bar... Do not open frame at front clips, only open from the back... Do not use in any front-loading, tumble type washing machine! ... DO NOT put in the dryer."
[ballcapbuddy_faq] https://ballcapbuddy.com/faqs/ — frame material, size fit, travel use, front-load prohibition — fetched excerpt: "It is made of sturdy yet flexible mechanically engineered plastic... Almost all sizes except very small youth and toddler caps... never in a front loading machine."
[simplehouseware_catalog] https://www.simplehouseware.com — bag size naming and multi-size set bundling — fetched excerpt: "Simple Houseware Laundry Bra Lingerie Mesh Wash Bag (2 Large & 3 Medium)".
[wikipedia_laundry] https://en.wikipedia.org/wiki/Laundry — top-load vs front-load drum-loading definitions — fetched excerpt: "Laundry dryers can also be top-loading, in which the drum is loaded from the top... rather than the more traditional front and back sides."

Branches:
product_form → mesh_wash_bag: then_ask mesh_target_item, makes frame facets irrelevant (bag's spec set has no frame material/opening/wash-method concerns) — supported by the bag vs. frame product distinction across all sources above.
product_form → rigid_wash_frame: then_ask frame_target_item, makes mesh facets irrelevant (frame has no mesh density/closure) — same basis.
frame_wash_method → dishwasher_top_rack_only: makes frame_front_load_safety irrelevant (no washing-machine use, so no front-load risk) — [ballcapbuddy_how], [ballcapbuddy_faq].
frame_wash_method → washing_machine_top_load_gentle / both: then_ask frame_front_load_safety — same sources, since the caution only applies once a washing machine is in play.

Noise: Comparison-row coverage test could not be fully run — retail listing pages (Target, Walmart, Wayfair, Home Depot, Grainger, Uline), search engines (Google, Bing, DuckDuckGo) and most lifestyle buying-guide sites (Good Housekeeping, CNET, Apartment Therapy, Martha Stewart, Family Handyman, The Spruce, Treehugger) returned bot-block pages, 403/404/402 stubs, or JS-only shells throughout this run, leaving one brand spec sheet per product type (BallcapBuddy for frames, Simple Houseware's catalog for bags) instead of the two-per-type target. Rows left out for lack of a second source: bag edge-reinforcement/binding, bag zipper-pull covering as its own facet (folded into closure_type values instead), tumble-dry compatibility for mesh bags, sneaker-specific rigid frames (plausible but unsourced this run), and any numeric bag dimension or mesh-gauge range (kept categorical rather than invented). No safety/performance standard body was found to govern either product type; none is cited as a facet or judgement for that reason.

Corrections (2026-10-26):
- Replaced the misattributed `wikipedia_laundry` reference (quoted passage described top-loading dryers, not washers) with `wikipedia_washing_machine`, citing the Washing machine article's own top-load/front-load passages, and repointed `frame_front_load_safety`'s evidence to it.
- Changed `mesh_target_item`, `mesh_bag_size`, `mesh_closure_type`, and `mesh_set_configuration` from `source: listing` to `researched`, noting in each `listing_field_hint` that only one brand's catalog page, not a sampled retail listing, was confirmed this run.
- Added full facet `frame_detergent_restriction` (no-bleach/no-lemon rule for rigid frames, both appliances), cited to `ballcapbuddy_how`/`ballcapbuddy_faq` with new supporting quotes added to those references, and added it to `product_form`'s `mesh_wash_bag` branch `makes_irrelevant`.
- Raised `frame_opening_mechanism`'s `backfill_cost` from `medium` to `high` to match `frame_front_load_safety`'s grade, since both are sourced only from the brand's own instructions page with no listing presence.
- Added vocabulary entries for `hook-and-loop closure`, `side release clips`, and `hinge snap`.