Does kitty litter work on old oil stains?
Does kitty litter work on old oil stains? The kitty litter will work best if the oil or stain is still fresh, but it can work on old stains as well. For really tough stains, you may need to work in the litter. Get an old 2×4 and mash the kitty litter into the surface. Allow the kitty litter plenty of time to work.