I need some ideas on how to keep down the smell in my chicken run. I have 4 hens in a suburban neighborhood. There coop is 10 x4 and their run is about 40x10. Raking the run seems silly, since they "rake" as they scratch all day long. But, would it help to rake? Lay down hay? What works for you? I certainly want to keep my neighbors happy and I fear that as summer comes and the sun beats down on the area we will have a problem.