You need human asparagus piss to counter the cat piss.
Step one: eat about 5 kg of asparagus.
Step two: drink about 4 litres of water.
Step three: do not piss for about two days, do not drink any more water.
Step three.two: spend lots and lots of time in direct sunlight.
Step four: apply your piss to the problem area.
Step five: euphoria.