I have an old garage with open front I keep two vehicles in. The field mice enter the engine compartments from below and chew the insulation and pack it to the heater/air blower motor compartment. I have tried pellets, cheese, peanut butter, traps, and nothing seems to work. They won’t even go to a trap. Their last home building costs me $142.00 to have the blower cleaned out. Anyone have any other suggestions, maybe those electronic devices? Thanks for any help…