Rinse the stain with cold water as soon as possible
Mix equal parts white vinegar and water
Apply the mixture to the stain and let it sit for 15 to 30 minutes
Gently rub the fabric together or use a soft brush
Wash the item with laundry detergent in the warmest water safe for the fabric
Add baking soda to the stain before washing if needed
Use an enzyme-based stain remover for stubborn stains
Avoid using hot water until the stain is gone
Air-dry the item and check that the stain is fully removed before using a dryer
Repeat the treatment if the stain remains