Grass stain, muddy paw prints and soil on linen beside a denim leg and a trowel

Outdoor

Grass is both a protein and a tannin stain: hot water coagulates the protein, and heat or alkali sets the tannin — so treatment starts with a cool-water enzyme soak. [1]

Mud works the opposite way from most stains: let it dry fully, then scrape and brush off as much as possible before any water touches it. [2][3]

Stains in this family

GrassGrass is a tannin-and-protein stain, so keep heat away from it: pretreat both sides wit…Mud & soilLet mud dry, then scrape or brush off as much as possible before any water touches it. …

All stains A–Z →

Sources

  1. Institutional University of Illinois Extension — Grass — Stain Solutions (accessed 2026-08-18)
  2. Institutional University of Illinois Extension — Mud — Stain Solutions (accessed 2026-08-18)
  3. Manufacturer Tide (Procter & Gamble) — Remove Mud Stains from Clothes Easily (accessed 2026-08-18)

Updated 2026-08-19. Compiled from the cited sources; not independently verified by this site.

Safety

Never mix cleaning products, especially chlorine bleach with ammonia, acids, or other cleaners. [1][2] If a cleaning or laundry product is swallowed or gets in the eyes or on skin, contact your local poison control service for case-specific advice. In the US, call 1-800-222-1222 or use webPOISONCONTROL. [1]