Alternatively, use a commercial scent-based rodent repeller, and spray it according to the instructions on the package.
Arm your traps with nesting materials like cotton balls, which are often more effective than other bait types. When using no-kill traps, be sure to release the caught mice far away from your home to prevent them from returning, and make sure it’s legal to release live mice in the area.
Note that while these are popular methods, neither of them have been proven to be as effective as other means.
Be sure to park in the garage first to avoid unwanted debris finding its way into your engine.
Alternatively, many car cleaning services know their way around a vehicular rodent infestation, and will clean your car and remove the mice for you. Just call ahead and make sure they’re equipped to handle it.
If you do detect a foul smell from the ventilation, refrain from driving your car until the problem is solved, as a compromised ventilation system can pose serious respiratory health risks.
If you suspect your car may have an infestation, first check the engine block for signs of damage, as full or partial damage to this area may be dangerous. Take your care to a mechanic if you’re uncertain of your car’s internals.
Nests are often made of soft bedding, like wood chips, shredded newspaper, or even your car’s own upholstery. In addition, they’re often fairly large and easy to spot.
Test your car’s dashboard and console functions—like the AC, radio, windshield defroster, etc. —one by one to make sure each is in working order.
Wear a mask and rubber gloves while cleaning to avoid contact with any unsanitary substances. Use color-safe bleach on upholstery and other fabrics.
Alternatively, sprinkle mothballs along the interior and under the hood.
Stuff the wire mesh or use wires to affix it to places like exposed vents, wires, and hood scoops. Every car is different, so consult a mechanic to find out the best places in which you might use the mesh.
In addition, remove any food and nesting materials from your garage.