I've only ever used cedar chips and never had a problem. That being said my brooder boxes are either open on the side or the top so there is plenty of air in the boxes. I've used them in my coop as well and never had any issues there either. But the coop is very open as well. I've never lost a...
I only let my chickens free range when I am home. We have cattle and horses and when they are out they tend to stay close to them. My gelding is a very messy guy so the chickens love him! I have a rooster who does a pretty good job keeping an eye out, but things happen and I still loose a hen...
I'm with @ButtonquailGirl14... pass the popcorn! I'm here to observe!! New to the silkie game myself. Mine are only about a week old, but I've tried to do a lot of research, and keep studying while they grow!! Hopefully by then I won't be such a noob!