I can't say it works...but my Grandmother always told me they use to throw moth balls under her house to keep the animals away. I never tried it...but she said it worked, you know back in the good old days. LOL

I do know they make something for that it's called OUT or something like that. I got it once, a few years ago, to keep the dogs out of the flower bed.........Wrong!!! Didn't work on my dogs but who knows it might work for cats.