I'm still trying to figure out the most affordable & safe coop/run to build. I came across a post about pallet coops & runs but are they safe? We live in a sort of "hole" in the woods where we have coyotes, foxes, raccoons, feral cats, stray dogs, etc. Would building a pallet coop/run offer basically the same protection as using standard lumber or would it be safer to go ahead and spend the money for actual lumber? It would be for 5 girl sex links. And what's the best & most affordable way to insulate a coop? Also, we want to make the coop big enough for us to walk into so if we do it this way do we need external nesting boxes or would simple milk crates lined along the wall be ok? Thanks!!