Thank you, rocksbride. My cats play with the last mouse-in-the-house (van). I had to rescue the soggy little devil. Bet she moved to a different neighborhood.

The times we have had mice get in our RV our cats wake us up in the middle of the night chasing the mouse.  Once one of our cats caught and killed one w/o waking us.  He brought it to momma (DW) and dropped the cold wet mouse on her chest. See momma, what a nice kitty I am, to bring you a present!  That got us out of bed quickly. 

This 2006 Winnebago Sightseer must be very well sealed, no mice in 4 years of travel. 

When locating and sealing openings underneath, don't forget inside the coach around plumbing and wiring holes from the basement area into the living area. I use aluminum duct tape to seal these areas, and use Fresh Cab behind cabinets and behind the firewall under the dash. When you store your RV the odor is strong, but when you're living in it, air movement greatly reduces the odor.

Al most forgot; before sealing with the metal duct tape I drop a block of TomCat mouse poison into the hole. It's no danger to pets or children because it's trapped in the belly of the RV.