Looking to build a hedgehog cage out of an old piece of wood furniture. I want to keep a classic wood look so would rather not put linoleum on the bottom of the cage. I am concerned about the possibility of urine soaking into the wood and want to make sure that I seal the wood effectively but also want to make sure it is a safe option. Do you think that a poly seal would be a safe option, like a bar top for example. Thank you.