I have tried peanut butter and it does work.

But it is messy as OffroadX pointed out, and you end up eating too much of it while you're working because even though you are taking care of your X and that is an excellent thing, it's really boring standing there with paper towels, toothbrush and whatever else you're using trying to rub it into the spots and keep it off the paint at the same time and after a while you just go out and get some Back to Black.

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