The only thing better than this would be paint that caused the urinator’s pee to splash back all over his clothes.
DANG!
Actually, that's pretty much what happens anyway.
Used to teach classes about, among other things, how to find pet urine in carpet. UV light is the best way.
Fun thing to do in class. Line everybody up, turn out the lights and shine the UV on their shoes and lower legs.
All the guys, and surprising numbers of the females, are speckled with urine.