I am of no help using a live trap for a cat....but there are several guys on here that should help when they see the thread. I would also read up on your states laws regarding trapping cats(cougars etc) as they are more then likely protected. If you happen to get lucky I would call animal control and have them remove it if it is protected. They can not do anything about a non target live trap catch, but they will throw you under the jail if you kill a protected species.