After finding my silkie sleeping (and pooping...a lot) in my nest boxes, I figure I need to put some different kind of bedding in the nest boxes (since apparently she doesn't get the difference). I've heard straw can be bad (mites and such-though does frequent clean out help with that?)...but I know some people do use it. Right now I have pine shaving in there just like the rest of my coop. So, what do you use?