Are there any cage material requirements for USDA licensing? I have some cages currently housing guinea pigs which we are selling to get in to hedgehogs that has unsealed wood. The wood has a vinyl floor lip to stop urine soaking in to it but the majority is untreated plain 2x6s. I also have some tanks(very large tanks), some coroplast cages, some sealed wood cages... Just whatever was on hand but we are planning to replace the coro cages with sealed wood since the sides are too low for hedgies and the c&c bars will not keep them in safely like a guinea pig.