I've decided to go with particle board for this coop for various reasons. The thing though is I'm having troubles trying to figure out what I need. I've heard you shouldn't use oil paints or polyurethane in coops. I've also heard you shouldn't use latex paints on particle board because it'll cause it to chip and you should use polyurethane (or something like it) to properly seal it. So, what should I do? I don't want to harm my chickens. Also, I want to paint it to help prevent formaldehyde from coming inside the coop from the plywood (it can leak outside through the siding, but II don't want it inside).