🚀 go-pugleaf

My cat has developed the nasty habit of urinated or spraying (what ever male 
cats do) on my work bench in the basement.  He's been doing this for about 
five months now and nothing I have done has stopped him.  
I want to put a battery operated circut on the bench that will shock the cat
when he climbs up there to piss.  I don't want to kill him just shock the
shit out of him.  I am at my wits end and may lose my temper enough to cause
him grave harm, especially when he wets down my expensive tools.
Just a simple circuit that will have enough voltage to zap him but not hurt
him or me and will run for days on a few small batteries.

Please, any useful suggestions may save my cat's life. 8-)

ray