Nobody seems to mention using hay in their coops. I have been using it and seems to work fine. Also my chickens hardly ever poop inside the coop except on the poop board under the roost. I noticed as soon as they get let out in the morning they all do a Giant poop. Could they possibly be holding it until they get outside? Could they be that smart. Any one know? I've been watching and they are off the roost when I get out there and walking around in the coop, but rarely poop until they get outside. I'm really amazed. There coop has been clean, except for a very few small poops for over a month.