Grocery stores sell Color Catchers usually where the soap, starch, and those kind of items are, also JoAnn's sells a different kind & it is really great too. It is a cloth & can be used over about 20 or so times, it will tell you on the box the exact time can be used. Since I don't live by a JoAnn's anymore I use the color catchers & I've never had any trouble of dye running.