I have a 10 x 10 chain link kennel for their run, with an enclosed wood coop inside. I need to prevent predators from digging under the perimeter of the run, so am thinking of a 2 x10 plank floor (not pressure treated) covering the entire floor area. I know they will only last a couple years like that, but easy enough to replace. The ground here is just to hard to dig down at the perimeter to bury something. Thanks for any advice.