We have recently finished our coop. It has a small run and above the run is the hen house where they will stay at night. The run will be open during the day so they can also free range. What do I do about the flooring in the run and the floor in the hen house? Do I just leave the dirt and grass that is in the run or do I need to put shavings or sand or something down? The run area is covered on the top but the sides it is just hardware cloth so it may get wet inside when it rains. The hen house though is completely enclosed on all sides so it should always be dry. Also, how often do you change the bedding in the nesting boxes? Do I just use the shavings for that or some other material? Thank you!