Does anyone use a "dust box"...especially in smaller coops and confined areas over winter? I haven't been letting my bantams out into the cold and they are confined mostly to a 5 x 5 insulated, heat-lamp heated coop. Should I put a dish pan or something in there filled with DE? Does anyone else do anything like this? What about out in the run? Any ideas for dust boxes or dusting areas? What do you use and how is it "constructed"? Thoughts and ideas are greatly appreciated!!!