Well depends on were it is. If it is on the windows, just try using a razor. But I feel your question pertains more towards having it on the paint? If so, you might want to try using a hairdryer, But you might want to do this in the garage, or else your neighbors might think your a little weird!!LOL. I know this is bad, but if it is on the lowers of the car, gas might do the trick if you plan on doing a full detail!