What is eating at my ceiling?
I found shavings of wood, that looks like some insect might be eating away at our kitchen ceiling. I've included a picture. The little shavings were caught in cob webs. This is our kitchen ceiling. The roof to the house is a metal roof. I don't know how much insulation is between the kitchen ceiling and the metal roof. Also I just started seeing chipmunks in our backyard and hope those are not the cause. Any suggestions would be appreciated.