Ok, I am new to chickens.I get my chickens this weekend. Someone mentioned that I could use mulch inside the coop. The mulch would be free fom the city. Is this okay to use? I saw other posts about mulch but it was people using their own. The coop is in the barn on a cement floor. Any help and advice would be great! Also one of my concerns is that it has rained here today and the mulch would most likely be wet this weekend if I put it in the coop.