Sue,

Last year I got tapped with an $800 repair bill on the RV due to a/some mice. They chewed through a wire harness and one of the O2 sensor cables.

I keep an ultra sonic pest repeller plugged in under the RV at all times now. I even found a good use for that switched outlet behind the TV ... there's another repeller plugged in there.

AFAIK - not a single mouse since. Still worries me though when I see the squirrels hanging around the RV but they are just playing mind games with me & actually live in the tree next to the RV.

The ultra sonic pest repellers are available on line or at Lowes & Home Depot.

Tom