Remedy #1: Wipe the fabric with alcohol. You should test a corner first to make sure the material isn't damaged by the alcohol. Then apply
a mild chlorine bleach to any remaining stain.
Remedy #2: Rub the stain with liquid detergent or naphtha soap. Then rinse thoroughly.
Remedy #3: For stubborn stains, try rubbing with vinegar or hydrogen peroxide (test fabric first).