can you compost pet hair?
Yes — fur is keratin protein and composts like a slow-release nitrogen source, though clumps can take a year to vanish.
breaks down in 6–12 months, faster if teased apart and buried
C:N ≈ 10:1
which bins can take it?
- hot pile yes
- cold pile yes
- worm bin caution
- bokashi no
- tumbler caution
- curbside yes
- worm bin: Worms ignore hair for months and it tangles in the castings — add small pinches, not whole brushfuls.
- tumbler: Loose fur wraps around the drum's mixing bars; mix it into damp bedding before it goes in.
why?
Keratin's strength comes from disulfide bridges between sulfur-bearing amino acids, and only a narrow group of keratinolytic fungi and bacteria can unpick them, which is why a tuft of fur outlasts a lettuce leaf many times over. Composting tables still rate hair near 10:1 — more nitrogen-dense than kitchen veg scraps — so the feeding value is real, just released on a slow schedule. Matted clumps repel water too, and dry fur barely decomposes at all.
how to prep it
- Pull clumps apart into loose wisps before adding
- Mix into damp greens or bury mid-pile so it doesn't blow away
- Skip fur brushed out right after a flea or tick treatment
watch out for
- Topical flea and tick products stay on the coat for weeks, and permethrin residue is toxic to compost worms and to cats — keep treated brushings out of the bin.
- Fur from a dog with mange or a skin infection belongs in the trash rather than in compost you'll handle.
often confused with
- Dryer lint — Lint looks like fur but is mostly clothing fiber — its compostability depends on whether your laundry is cotton or polyester.
quick answers
Does pet hair in compost repel deer or rabbits?
The folk remedy has thin support at best. Scattered fur may unsettle animals for a day or two, but rain flattens the scent fast and studies of hair as a repellent show inconsistent results.
Can I compost hair from the groomer's floor?
Sweepings are fine as long as they're just hair. Watch for the extras that end up in that pile — nail clippings compost too, but shampoo residue, cotton swabs, and hair-tie elastics do not.