Mice made a home in my duct work....damn does that thing stink. Have tried everything I can think of, but all it does is mask the smell for awhile.
Be careful spraying stuff like Lysol if you have the heater/defroster on, it is flammable, the heater motor does have "brushes" so there is a chance of a spark. If you were to remove your heater motor and look inside you will see a coil with three terminals on it, this coil can get red hot...not a good place for mice to build nest (don't ask) or for Lysol vapor to accumulate(Hmmm...the resulting fireball would surely get rid of the pesky 'lil rodents).