trap as many of them as you can in the engine bay, you can lure them with a few pieces of cheese on the intake, then when you have enough of them trapped, start er up. Once your clear of the driveway WOT LIKE CRAZY.
i hear ya wiht having mouse problems... last time i fired it up i saw a couple of them run off, i just laced teh thing with moth balls, ive also heard that dryer sheets work decent as well... not for killing them but just as a repellant. but in my case they just chewed on the dryer sheets and now my car will smell like moth balls all summer
At the power plant I used to work at, we had mouse problems in the substation switchgear. Next time your power goes, it could very well be a mouse chewing through control wiring!
We used sonic devices with great success. If you have pets this may not be an option as it will drive them crazy.
i seen those sonic devices at walmart this weekend. $5
i may try it for that.
for now, i have havoc under the hood along with moth balls. also put some ivory soap in a cup under the hood, inside the car and in the trunk (KBcobra95 claims good luck with this)