when i was parking in my garage, my cars front bumpers rubbed against the walls of the garage. the white paint from the garage rubbed off onto my cars front bumpers, now there is a thin layer of paint that cannot be washed off. i tried using clay bar to remove the paint but it didnt work. i think it is because the paint is really thin so that clay bar does not pick up on it. i found that the only way to remove the paint is by using my finger nails, but there has to be an easier way. anyone?