if you are really worried, you could always fill up a bathtub and hand wash it that way. looks too big for a sink. I would try the color catchers in the tub with that synthrup(SP?) stuff that is supposed to catch the colors. I would start with a corner in the water and then go from there if it bleeds really bad I don't know what to do. good luck let us know how it works. I always pre-wash my batiks just to be sure that they don't bleed. pain in the toosh but it saves heartache later.