It's my fault. I've had this run for 2 years without incident. I regularly trap raccoons and dispatch of them quickly. To date... No problems. Yesterday I noticed a lot of feathers in the far end of the coop and fewer chickens than normal. I also found an area where something had dug under the fence. It ends up that I lost 10 of my White Rock laying hens. SO, rather than doing all of the things that I wanted to do, I spent all day yesterday securing the fence to landscape timbers (secured to the ground) and also ran a 3 wire skirt of electric fence around the run. If something tries to dig, it will meet an electric wire at some point. Don't let down your guard. I did and I paid for it.