How to Keep Rodents Away from Your Car Engine

Wilbert Tan

It doesn’t matter where you live—rodents are a real problem anywhere. If you’re a car owner, then you have to work doubly hard, as you need to protect both your home and your car from these pesky critters. In a very short time, a mouse or rat can wreak havoc in your vehicle as it gnaws its way through wiring and insulation. If your vehicle offers a warm and cozy escape from nature’s elements, it may even become they’re ideal nesting spot, so thinking of ways to prevent rats from eating your car wires is a must.


The fact that car manufacturers use soy-based insulation materials only serve to compound the problem, because the furry little mammals seem to find them irresistible. You certainly don’t want to discover one morning that your car has been desecrated and your electrical systems damaged beyond repair, so before them rodents deal their damage, it pays to prepare. Here are some of our top solutions to get rid of rats or mice in a car engine:

Step 1: Protect your investment

Parking your car in a garage is always ideal, because the walls create a line of defense between your vehicle and the outdoors. If rodents have a way of getting into your garage area, you need to take steps to protect your car, such as letting a cat patrol the garage for a few hours each night. You might also want to place mouse traps or rat poison around the car, as long as you’re not too squeamish about rodent carcass.

If you don’t have a garage or any other enclosed space to park your car, rats and mice are more likely to come if they live in the vicinity. You’ll need to make the car itself a repellent for rodents if you can’t give your car the protection afforded by an indoor parking spot.

Step 2: Use rodent repellent tactics


There are many products in the market that can help protect your car from rats and mice in the Philippines. One of the most effective methods is to use ultrasonic devices. Install at least two of these near the vehicle or inside the engine bay itself. Choose the ones that earn lots of good reviews, as the bad ones tend to be utterly useless. And feed the cat less so it’ll go hunting more often.

More practical ways also exist, such as mothballs and pine-tree air fresheners. Mice supposedly hate their smell. For pine tree fresheners, hang two to four of these throughout the engine and on top of the cabin air filter. As for mothballs, make a pouch with a net or screen and put in five to ten mothballs, then seal them in with tape. Then, secure it somewhere in your engine bay that’s relatively cool and with a bit of room, preferably with no moving parts.

Step 3: Keep the hood open when parked

This usually works if you have your car parked in an enclosed space with the sun shining in. Opening the hood of a parked car prevents the engine bay from becoming a dark, dry, and warm place that invites mammals to build a nest.

Car damage from mice, rats, and other mammals can be minor, but when they start to chomp on electrical systems and other key mechanical areas, the destruction may hamper the vehicle’s safe operation. Thus, it’s in your best interest to keep these tips in mind and make every attempt to keep those pesky critters at bay.

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