I do use a spray bottle, but like I said he is sneaky and he knows the SECOND you're not looking and makes a break for it. I honestly don't always think about it either though.

As for the sign, everyone who comes over knows the cat can't go outside. It's just that one of my boyfriends friends HATES cats, I just wonder if he'd bother to mention the cat got out. I know he wouldn't go back out and pick the cat up and bring him back in for sure.

I just wish I could keep him from trying to escape all together. I know when I stop using the spray he would start again.