What gauge of hardware cloth should I use for the bottom row around the perimeter of my run? I'm building a 15' x 20' run that runs around the east, west, and south sides of my coop. I've come across excellent material on the 18" horizontal lay at the bottom and how to thread the metal cloth together but was wondering what gauge would deter predators from trying to chew through it. As always, thank you to all who contribute.