Right now the hens have a 10x6' run. It is open and does not have an enclosed section for them to sleep at night. They have a roost with a removable poop board underneath, we have very mild weather in winter, but brutal heat in summer, so I have never thought about closing in the roost area for sleeping. The floor of the coop is basically dirt, but the flies are terrible and I was wondering if it would be better for the girls and the neighbors if I added something to the floor? Hay? I have tried wood shavings, but they just sweep them away and the wind carries them off eventually. Any and all help appreciated.