Bethesda, Maryland. I have a kind of outdoor "closet" that houses our electric meter. The largest gap into this closet is at the bottom of the door, a space measuring roughly 2" x4" at best. At the top of the closet there is access to the master bedroom floor, which the previous owner sealed off with very stiff chicken wire nailed in place. In the past, we have had mice get into this space and a year ago I added a heavy duty noise machine that is supposed to keep the mice and larger animals away. The other night around midnight something peeled back this chicken wire and gained access to the insulation and the floor above. It pulled the chicken wire back about six inches and pulled it off the nails. So it was big enough to pull off this feat of strength, yet was small enough to fit through the 2" x 4" gap at the bottom of the closet door. What am I dealing with here? Roof rat, possum? I set up a Have-a-Heart racoon trap outside the closet door but have not enticed anything to the bait (ham and sliced apples). H.