My husband and I built my first snake rack. I will post photos once it is completed. I was wondering how to coat the wood to make it so the humidity won't warp it. Can I use exterior house paint? Will this work and is this safe for the snakes? Or should I use something else? I have plenty of house paint interior and exterior from home improvements last year. So I'd like to be able to use what I already have if I can. Thanks!