Is it ok to use pine shavings from my local lumber yard? They have some hemlock shavings mixed in.
Does anyone use shavings and straw mixed?
I would imagine that lumber yard shavings probably includes shavings from treated lumber, which you probably don't want in your coop. It also won't compost too well.
If they separate it somehow, then great! Make sure it doesn't include anything from plywood either - 'cause that means glue.