WARNING - Zachery S. Warren suggested to ferret proof with hot glue and window screen. This is not a suitable ferret proofing material for some ferrets. Boum Boum destroyed the metallic screen of a screen that was stored in a closet. He is more persistent and destructive than our other ferrets but I am convinced that if any that wants it can tear a screen. Lorraine [Posted in FML issue 2111]