Scotch-Brite

Specs partially disclosed Made in United States scotch-brite.com ↗

Scotch-Brite is a 3M line built around synthetic scouring materials. The classic scrub sponge pairs a cellulose sponge (not plastic) with a green non-woven pad of polyester/nylon fibers, resin binder, and abrasive grit - the green side is the plastic, and it sheds synthetic fiber as it scrubs. The Dobie is a polyurethane foam core in a nylon mesh sleeve, fully synthetic. 3M has moved some pads to "100% recycled plastic" fibers, which is still plastic. No part of the core line is plastic-free.

How clear are their specs?

3M product pages describe the constructions in general terms and disclose the recycled-plastic fiber content on some pads, but don't frame the fiber shedding as a microplastic issue.

Products to avoid

Documented so you know what to skip — each still has a full breakdown and sources.

Scotch-Brite Heavy Duty Scrub Sponge, yellow sponge with green scouring pad, 3-pack

Scrub Sponge (Yellow & Green)

Minimal plastic contact Not recommended

The classic yellow-sponge-and-green-pad. The yellow half is cellulose (fine), but the green scour side is a polyester/nylon fiber web that sheds synthetic fiber as you scrub.