I'm most likely going to purchase a wood shed to convert to a coop but am unsure whether to use a cement or wood floor. I'd rather just pour a cement pad. I'm in SoCal so snow isn't an issue. I like cement since it is easy to clean and won't rot. What are the negatives to cement? Our chickens are free range during the day. They would use the coop for egg laying and to get closed up in at night.