Not sure what we have! The body is a three inches long with a long tail. I have trapped several (16?)and they were on the outside porch. Then we heard scratching in the ceiling of the porch. I continued to leave out the sticky traps, but they got wise to those, and somehow would eat around the food without standing on the trap. So we resorted to poison. Well, in two weeks, four of the blocks of poison have disappeared, (these are where no other animal could get to them). Now I have that musty dead smell. At least it is winter otherwise I am sure the smell would have been worse. So, How long before the smell goes? Weeks, months? I have not heard any scratching in the past week or so, so I am assuming that they will all die, are all dead, or have moved on.