Don't put the cat outside - it will just kill innocent wildlife and not even eat it. Cats are nasty, spiteful, vindictive, ungrateful household parasites. You knew it was a cat when you got it. Now you have to live with the consequences. Get a dog. Or a snake.
Haha... this thread is funny... can't say I disagree with the cat sentiments (that's why I don't have, and NEVER will have a cat)... I sort of wondered if this thread would progress this way...
As to SS pin tumbling... I would happily tumble brass if somebody needed it but if it smells the slightest bit like cat urine I'm out, done, not taking it in my house... FWIW, my tumbler is down for the time being for a redesign...