I am working on a more permanent enclosure for my little checkered girl.

I am making her a large *box* It is about 26" tall 30" wide and will be about 24" deep. plenty of room for my little checkered to grow.

I am trying to think of what would be a good interior sealant for the wood to waterproof it to prevent her wastes from soaking into the wood and ruining it over time.

i was thinking some sort of exterior paint, but I don't want to poison her in the process..

and ideas?

The exterior will be wood finish stained, but The inside is what I am trying to decide what to use to line it.

I'll post pics as I can. It will have a front door that will fold down attached by a piano hinge and will have a desk drawer lock at the top to prevent meddling kids from getting into it.

I finished the front door today with it's clear lexan front in a wooden frame.

It is sitting in the garage letting the wood glue cure.