My property has lots of trees and twigs. I have put the downed twigs into his home. No pesticides have been used on my property because I feed my wild birds and squirrels in the back yard. I have no leaves in his home. My question is are oak leaves safe to put in his home? I read that oak twigs are ok but no mention of the leaves. It’s autumn now and the leaves won’t be around much longer. I really don’t want plastic leaves in with him. Thank you.