We use clay magic in the paint shop. Comes in different grades for lighter/heavier
oversprays/ contaminents.Works great !. Don't spare the spray lubricant,kneed the clay well while working it.
Clay Magic is fucking awesome. I 2nd that. These dumb motherfuckers here at my apt complex painted the buildings one day when it was windy and my whole car got overspray, it felt like sand paper. I got that shit, clayed it, waxed it( 2 coats) and it came out smooth as butter. Heres a picture. Oh and I used basic Turtle Wax to wax it as well.