I am thinking of using sand in my run and in my coop. I am going to use a dropping board with sweet pdz. I am very concerned about smell in the run. My coop is going to be kind of near my house so I don't want to smell it. Also I am not building a roof for my run. Maybe in the future but not now. so I am worried about when the run gets wet from rain its going to stink. is sand going to be the best option? Sand in the coop will that be really cold in the winter? It gets pretty cold here. It stays around 0 for months some times.