if they happen to be white clothes, you can wash them with bleach, and that SHOULD work. i had this happen to a white t-shirt just a few days ago, and i soaked it for an hour in a solution of 1 qt warm water w/ 2 tbsp bleach, then washed w/ white clothes and dried-worked like a charm! i've also read that lemon juice and salt works, but am unsure of the procedure.