Been looking at a lot of chicken coops on here and most don't seem to have anything to stop foxes digging under the walls of the run part. Do you think this isn't needed? Here I can only get chain link fencing or very weak thin hexagonal chicken wire, so I have gone with the chain link and I ran it down the side walls and right under the run. I wish I could find some kind of weld mesh! But I am wondering about leaving the floor unprotected? Be glad of any comments.