4 Ways to Keep Rodents from Chewing On Your Car Wires by Carlsen Subaru, Serving San Francisco

How To Stop Rodents From Chewing Car Wires

Whether in homes, offices or even your car, a rodent is usually an unwelcome guest. That's because they'll simply help themselves to whatever they can find for food. Mice, rats and even squirrels have been known to climb into unsuspecting cars and actually eat important components! Specifically, they most often chew on sound-deadening insulation and the insulation that surrounds and protects the wiring running all over your vehicle.

Preventing pests like these from chowing down on your car's wiring is much easier (and much less expensive) than repairing the damage they can do. If mice, rats or squirrels have been making your car into their own private restaurant, check out these four tips to keep them away for good.

Close-up of a hand holding frayed wires consistent with gnawing by rodents.

4. Park Indoors

Not everyone has access to a garage, but parking indoors can help reduce your risk of rodent infestation. After all, it's harder for pests to enter a sealed garage in the first place. But, as you know if you've caught such a pest in your own home, mice and rats can find ways to sneak in anyway.


No matter where you park your car, it's a good idea to check under the hood periodically for rodent damage, especially if you live in an area where such pests are particularly active.

A view of the complex wiring inside a vehicle.

3. Use Mothballs

Rodents hate mothballs. Generally, spreading a handful of mothballs in a perimeter around your car and underneath will deter pests from entering your car in the first place. Not a fan of mothballs? You could use other pesticides and pest repellants from the local hardware store, or even good, old-fashioned rodent traps. But those can be a little ... messy. We think mothballs are a great first step to keeping rodents away from your vehicle for good. Just be careful to keep children and pets away, as mothballs are poisonous.

The protective cord around wires is frayed, and the wire insulation has been chewed through. 

2. Capsaicin Tape

Once rodent damage has begun, you may want to use electrical tape to surround any wires where the insulation was eaten away by a pest. You can take things a step further and use special rodent-repelling tape instead. This is special tape laced with a natural ingredient called capsaicin, the chemical that gives hot peppers their fiery kick.

Since rodents are likely to return to the same place they found a delicious meal already, they'll end up chewing on the spicy tape -- resulting in an unpleasant (but ultimately harmless) burning sensation. They won't like that very much, and they should get the message to leave your car alone after that.

1. Call the Pros

Sometimes home remedies simply don't work. If mice, rats, and squirrels keep getting into your car, it may be time to get the experts involved. A licensed, certified pest control company will be able to eradicate the vermin so that they won't bother your vehicle any more.

If you have questions about keeping rodents away from your car's wires, want help with any of the methods described above or you're in need of wiring repair after a rodent made a meal of your ride, visit the Carlsen Subaru service center! Our technicians have helped more customers than you might think with this particular problem.

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Carlsen Subaru

480 Veterans Blvd
Directions Redwood City, CA 94063

  • Sales: 650-365-6390
  • Service : 650-365-6390
  • Parts: 650-365-6390
  1. Carlsen Subaru

    480 Veterans Blvd
    Redwood City, CA 94063

    • Sales: (888) 520-5916

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