Opie was in my basement. I got out of my car coming from quilt guild one night and something ran across my front yard. It wasn't a cat. I ran after it and it disappeared. The only place he/she could have gone was under my front steps. He/she ran along the top of the basement wall behind the insulation. There was a hole in the wood framing under the front door. That was his/her front door.
Insurance would not pay for its' removal but did pay to clean and replace all the insulation. Possums are not rodents. They are the only marsupial in North America.
The whole time was about three months. I just prayed that it wouldn't have babies. Then I would have to let them live there until the babies were grown. I checked the maps. You are lucky to be near Paducah!