On my westy they enter through the vent hole in the battery box. Yes, mice can jump, they can also climb surfaces that you might think are smooth. and the hole they need to get in, can be surprisingly small.

On Jan 22, 2013, at 11:49 PM, Dave Mcneely wrote:
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> 'Tis the season!!  I like your proposals, but mouse traps do work, if properly positioned.  Now, where would they be gaining entrance?  The only parts in contact with the parking surface are tires.  Put the traps against the tires on the inside surface?  How do mice get into vehicles?  Do they jump onto parts under the vehicle?