what exactly did you use? if we know what the product is we may have some ideas. some adhesives are permanent if ironed on, some are 'moveable' while wet, but dry permanent, some wash away nicely. you might try goo-gone or some product like that, or maybe using a brown paper bag placed over the area & ironing might 'melt' it and the brown paper may soak it up...you could also contact the company who makes the product and ask them what will take it off.