How To: Remove a Grass Stain
What You Need
Follow These Three Easy Steps
Apply a pre-wash stain removal treatment to the stain and let sit for about 15 minutes. For a more natural approach, use a solution made of one part white vinegar to two parts water.
Use a toothbrush (or a rag or nailbrush) to work liquid into the area.
Finish with a wash using an enzyme detergent (most standard laundry soaps are enzyme-based), which will break down proteins and lift the stain from your garment.