can you compost dryer lint?
Yes, but only if your laundry is mostly cotton, wool, or other natural fibers — lint from synthetic loads is shredded plastic.
breaks down in 1–3 months for natural-fiber lint, moistened and mixed in
C:N ≈ 400:1
which bins can take it?
- hot pile caution
- cold pile caution
- worm bin caution
- bokashi no
- tumbler caution
- curbside caution
- hot pile: Fine once you have confirmed the load was cotton, linen, or wool — bury the moistened wad instead of laying it on top.
- cold pile: Same natural-fiber check, then work it in; a dry mat on a slow pile just sits there shedding water.
- worm bin: Natural-fiber lint works as bedding once dampened; keep lint from synthetic-heavy loads out entirely.
- tumbler: Natural-fiber loads only, and dampen it first — dry lint balls up against the drum wall rather than mixing.
- curbside: Many curbside programs exclude lint because of the synthetic-fiber problem — check your accepted list.
why?
Lint is whatever your clothes shed: cotton and linen fibers digest like any other brown, wool adds a little slow nitrogen, and polyester and nylon fragments are microplastics that survive composting and end up in your soil. A typical American wardrobe is more than half synthetic fabric, so most lint traps hold a blend, and microbes can't sort one fiber from the other.
how to prep it
- Check what you actually dry — compost lint only from mostly-cotton and wool loads
- Moisten the wad so it doesn't repel water
- Pull it apart and mix it in; whole clumps mat down
watch out for
- Polyester, nylon, and spandex fibers never break down — lint from a typical mixed wardrobe seeds your compost with microplastics.
- Lint from loads dried with dryer sheets carries softener residue; skip it if the compost feeds a vegetable garden.
- Colorado State University Extension is stricter than this verdict: after asking whether lint decomposes, improves the compost, and needs composting at all, it concludes "Lint failed the three filters and should not be composted." Follow that whenever you can't identify the load.
often confused with
- Dryer Sheets — The sheet itself is polyester cloth with a softener coating — it never composts, whatever the lint verdict is.
quick answers
Is dryer lint a green or a brown?
A brown. It's mostly cellulose fiber with almost no nitrogen, so pair it with food scraps or grass clippings rather than adding it to an already carbon-heavy pile.
How do I know if my lint is safe to compost?
Go by the loads, not the lint. Towels, sheets, denim, and cotton shirts make compostable lint; athletic wear, fleece, and blends do not. If you can't say what a load was, treat that lint as trash.