I have a 6'x10' by 6' tall run. Its frame is landscape timbers and 2x4s. i bent 36" hardware cloth to form an apron on the 3 sides not connected to the coop. 18" up the sides and 18" laying flat on the ground, covered with dirt. I used chicken wire everywhere else, overlapping the hardware cloth at the bottom. The chicken wire is secured to the hardware cloth with twisted galvanized wire every 12 inches or so. The roof is chicken wire but I"m also going to cover it with some reclaimed galvanized roofing. I'm not really worried about the roof, or predators digging under. Should I be? My main concern is the single layer of chicken wire from the starts at 18" above ground level. Should I be concerned? Please let me know whether you've had problems with a similar setup. I know we have foxes, raccoons, opossums, hawks, etc. Dogs shouldn't be a problem unless they are coming from afar. What do you think? Edit: I probably should add that the reason I'm asking is because I have zero experience with chickens and their predators, other than what I've read. My chicks are inside the house but will be turned out in a couple of weeks. Thanks!