For cotton and polyester: Pre-treat with liquid laundry detergent. Machine wash according to garment care label. If stain persists, apply a half-vinegar half-water solution. Mix a solution of ½ cup liquid laundry detergent per one gallon of water in a plastic bucket. Soak garment for up to 30 minutes. Machine wash again in hottest water safe for fabric.
For washable silk and wool: Using an eye dropper, apply a half-vinegar half-water solution to the stain. Let sit 10 minutes. Flush with water. Repeat as necessary. Take garment to a dry cleaner if stain persists.