What do you think is the best bedding. I am trying to decide before I move my chicks into their coop. I have a big bale of pine shavings that I would like to use. What do people think about those? I have heard of people using DE, what is that and what are the pros and cons of using it? Also, what do you use as bedding in the nesting boxes. Could I use pine shavings? Thanks so much!