I have several pieces of plywood or wood(12x12") laying on the ground in the run, turn them over every few days or so to expose the buggies that have sheltered there.I've been outside cleaning the chicken yards today. I had put a 8 inch strip of metal down next to the main coop for some reason or another and pulled it up today. 3 hens dove in grabbing worms and grubs as fast as they could. When I came in they were still happily scratching around in the dirt, not a care in the world.