A good sized "milk" snake also works very well  (^:    (these known for hanging from the rafters in barns....).   I can guarantee this, having once shared a cabin with one that did an excellent job.....

Seriously though, mice, (or some other rodents) once gnawed  some of the rubber hoses in my engine until there were almost holes in them!!!   I'd left the car parked while camping  for over a week in the woods and later discovered the problem!

Racer X wrote:

 I have a nice area for the cats to lay around on right near the van and have frequently had to chase them out of the van in the morning. No sign of mice.

Joseph Roy wrote:
 

 

 Has anyone found a effective way of keeping mice out of their Westy? I have an '84 Westphalia, water cooled, that seems to draw mice as soon as I park in a campground. Food is always tightly secured, yet the mice come in through the dash and run around inside all night. They climb up the tires, next I see them coming down from the dash area. Recently, I stayed up and set traps. By morning I had a pile of 15 mice. Does anyone know if 12 v. ultra-sonic pest repelling devices are available? I've tried to caulk as many holes in the dash as I can reach. All suggestions are welcome. Thanks.