However, Rayewood RV Service has found success using a combination of peppermint oil and water.
This is sprayed inside the RV in places where mice tend to enter (under sinks, behind couches).
Our service department now provides this. For $79, we will spray the interior of your RV with peppermint oil two times this winter. (One time for $39.50)
We cannot guarantee that mice won’t visit. But, in our experience, we have over 60 rentals sitting outside all winter that we spray, and using peppermint spray has reduced incidents of mice to almost nothing–for many years.