I just bought a '74 BMW 2002. I'm doing some mechanic work to it and while i had it in my garage I had the door windows rolled down. It's been in there for 2 days. sometime in the that time period apparently my wifes cat has climbed in there and done business on the back seat. There is a small pile of chit on the hat rack. I've already shoveled it off of there but it still stinks something terrible. I bought some son of a gun cleaner but it doesn't help. what do i use to kill that gawdawful odor?