What to Do When Mice Keep Entering the Car Engine Compartment?

[DiCora]

Try to park away from areas where mice are active, such as garbage dumps, ditches, or grassy areas. Regularly inspect and clean the engine to check for signs of mouse activity and ensure the engine compartment remains clean. Placing rodent repellent bags or mothballs in hidden spots within the engine compartment can also be somewhat effective.

[StJosie]

I drive a ten-year-old car, and the engine compartment is always infested with mice, which drives me crazy. Later, I realized the key is prevention: clean out any debris in the engine compartment before parking, and don’t leave any food crumbs behind, as mice will sniff them out and crawl in. I also bought an ultrasonic rodent repellent and hung it in the engine compartment—it works pretty well and isn’t expensive. Regularly cleaning the surroundings of the car is also important, like trimming bushes and emptying trash bins to reduce hiding spots for mice. Extra caution is needed in winter since the engine compartment stays warm after parking, making it an ideal cozy nest for mice. Once, I sprinkled some cat fur in the compartment—I heard the scent scares them off, and it worked somewhat. In short, developing good habits can save you a lot of trouble. If all else fails, it’s best to visit a repair shop.