The other day I came out to my car and saw on where the bumper meets the hood that there was a small (about the size of 3 or 4 quarters) section of paint scraped away. Now, it didnt go down to the primer and the person was driving a white vehicle ( I suspect it was a truck). They obvioulsy left and I am pretty pissed. I tryed scraping away the white paint with my fingernail and got most of it off, but there is a little bit thats being stubborn. What house-hold products can I use to clean away the remaining white paint/scratch? BTW, it's on a black car and I try to park next to people who look like they give a damn about their car, like newer vehicles so I don't get door dings and such.