Like everyone else, I'm dying to hear about David and the outcome of your plan, Kathy. We get little field mice out here, and once when I moved a ladder in the garage a dead one fell off the top of it and landed on my shoulder. Really creeped me out. We did have a rat in our first house - we could hear it crawling around in the walls. My husband found it eventually and we were able to get it to eat a poison that someone recommended. Too long ago to remember what it was though. I would be beside myself if I had a full-fledged rat in my house now. I hope you found a solution.
"If you trust Google more than you trust your doctor than maybe it's time to switch doctors."