For cotton and polyester: Pre-treat stain with liquid laundry detergent. In a plastic bucket, mix a solution of ½ cup liquid laundry detergent per one gallon of water. Soak garment for up to 30 minutes. Machine wash according to garment care label. If stain persists, apply a solution of one part vinegar to two parts water. Rinse and machine wash again.
For washable silk and wool: Pre-treat stain with a commercial stain remover that is safe for the fabric. Let sit 15 minutes. Flush stain with cold water. Using an eye dropper, apply a solution of one part vinegar to two parts water. Flush with cold water again.