We currently have our 5 two month old chicks (2 silkies, an easter egger, an ameraucana, and a black copper maran) in a coop/run which we purchased and assembled. Our girls spend most of their day enclosed in the run portion of the setup, they get let out into the yard for about an hour a day when our dogs are locked inside. We are in the process of building a much larger coop and run from plans purchased at My Pet Chicken, and I was wondering what people thought was the best litter for a large run. I'm planning on continuing to use pine shavings for inside the coop, but the chicks are only inside their coop when they're sleeping. Is pine shavings best for large runs?