My husband designed our coop and built it before we had our chicks, but now that they are getting ready to move in and have been spending some time in there during the day, I have some questions. The coop frame was built on brick pavers that have been covered in sand. The nesting boxes and roost are up a ladder and have a different flooring and covering. My concern is the sand. I can already see that it is going to get very dirty, very quickly and although we do not live in a cold climate, if the sand gets wet, it is cold. For those of you who use sand, how do you clean it and how often?