Cockroaches in the Car: How to Get Rid of Them

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Video Cockroach in car

The first step in any pest control effort is prevention.

Most cockroaches prefer warm, wet environments, and they eat decaying plant matter and garbage.

The best way to keep cockroaches out of your car is to keep the interior clean and free of trash, especially food trash. If you live somewhere humid, even a few crumbs can be enough to bring in a hungry roach. Cockroaches even eat glue and paper, so all the trash has to go. It’s also probably a good idea to keep the area around where you park free of leaves and other ground-covering debris. If they don’t hang out around your car, they’re less likely to find any dropped food inside your car.

But you’re probably not here because you want to keep cockroaches from infesting your car. You’re probably here because you’ve already seen at least one cockroach in the car, you’re worried there may be more, and you want to know how to get rid of them.

Maybe you’ve found a cockroach in your car and you want to just live and let live.

However, cockroaches are actually a dangerous pest. Not only can they eat pieces of your car or any clothes you may have left in there, but they carry bacteria, viruses, and allergens. They can make you sick.

First off, how do you get roaches in your car?

Roaches are small and annoying pests that can be unwillingly transported within items or clothing into your car.

From your hoodie and shorts to boxes and other belongings. They can infiltrate them and later on crawl out and pose a large roach infestation in your car.

Some of the most common ways roaches find a way into your car:

  • Groceries: Always check the groceries from the market to prevent any roaches or bugs from falling into your car. This is a rare situation but good to remember.
  • Suitcases and backpacks: Roaches might get into your backpacks or suitcases when there are food crumbs. More importantly, it’s a common problem for frequent travelers.
  • Clothes: Roaches like warm and dark places so folded clothes are common hiding places for adult and baby roaches. Especially if you have already a roach problem in your household. They can crawl into your drawers and then – into clothes.
  • Boxes: It’s an observed problem between moving companies.
  • Plants: Cockroaches do hide in potted plants and you might unknowingly carry them into your car when transporting your newly bought or existing plant.
  • Through gaps: They just find a small opening and start to look for food.

And once you carry them through your car doors and don’t spot them right away – it’s game over.

Most common roach hiding places in your car

There are many small hiding places for roaches and other pests to infiltrate that it’s hard to list. But to kill cockroaches effectively, you will have to investigate your whole car and we suggest you starting with:

  • Floor mats
  • Glove compartment
  • Door pockets
  • Air conditioning vents
  • Seat cushions

These are somewhat ideal conditions and hiding spots for roaches to lay eggs and hibernate during wintertime.

So, how do you get rid of cockroaches in the car?

Do a thorough clean

  • Step one is a thorough clean. That means every bit of trash in your car, food and otherwise. Pull up the mats, take off the seat covers, and break out the vacuum. Or better yet, get your car detailed. This ensures that once you get rid of the cockroaches, they won’t come back. But that just step one. Some cockroaches, like the American cockroach, can live for up to three months without food, so you’re not going to get rid of them just by taking out the trash.
  • Step two is to get rid of them. There are several ways to control a cockroach infestation, with varying levels of effectiveness and safety.

Use roach killer powders or cockroach bait

A simple extermination method is to use a powder like boric acid, borax, silica aerogel, or diatomaceous earth. Boric acid is a chemical pesticide and borax is a mineral. They enter the insect’s digestive and nervous systems and kill them. Silica aerogel and diatomaceous earth are moisture-absorbers that kill insects by dehydrating them. You can mix any of these products with little something cockroaches like to eat, like flour, spread it in a thin layer in a jar top or other shallow container, and place them in the small, dark spaces in your car (e.g., under seats and in the trunk).

Boric acid and borax are the most effective of the four options here to eliminate your cockroach in car problem.

They are also more dangerous for people and animals.

Boric acid can cause a rash if you get it on your skin. If accidentally eaten, it can lead to nausea, stomach pain, vomiting, and diarrhea. When inhaled, it can dry out your mouth, nose, and throat, leading to a sore throat, cough, nosebleeds, and even difficulty breathing. These effects are worse in children and pets and are especially dangerous to infants. Borax has some of the same effects as boric acid but also causes eye irritation. A specific effect of borax is hormone disruption, leading to reduced fertility and libido. As little as 5 grams of borax can kill a child and 10 grams can kill an adult.

If you choose to go with one of these options, it’s best to leave the powders overnight and remove them in the morning before using your vehicle. This will reduce the chances of anyone touching, inhaling, or ingesting these toxic substances.

Silica gel and diatomaceous earth are less effective, but also safer. Silica gel can cause minor eye and skin irritation in the short term. However, it also may be a risk factor for some cancers in the long term. Diatomaceous earth is considered non-toxic to humans and most other animals, but it can cause lung irritation after long exposure and it is especially dangerous to bees. While these products are safer, it’s probably still a good idea to only keep them in your car overnight.

An even easier option is cockroach bait. These are sold in hardware stores or online. All you have to do is follow the label directions. Because any insecticide is poison, however, make sure to keep them out of reach of children and pets.

Why you shouldn’t use a roach bomb in your car

You may be wondering can I bomb my car for roaches?

While a roach fogger, in-car roach bombs, and similar methods can be used in the car, they’re very toxic and have limited effectiveness. For starters, they’re flammable. They’re also an aerosol insecticide, which means they disperse into the air and settle on everything, coating the interior of your car in poison.

If you breathe them in, it can cause illness. Besides these dangers, they don’t work well. Very little actually ends up in the little nooks and crannies where cockroaches like to hide. What’s more likely is that you’ll just drive them deeper into your car as they try to get away from the fog. If you do decide to go this route and use a roach bomb for the car, be sure to air out your car afterward by leaving all the doors open for a while. It’s probably a good idea to blast your air conditioner, too, to make sure anything that is settled in the vents gets blown out before you get in.

Any of these options should take care of your problem.

However, if you have a few pests left over, you can keep a spray bottle filled with dish soap and water in your car. When you see a cockroach, spray it with the spray bottle. The dish soap will cover their bodies. Since cockroaches breathe through their skin, it will suffocate them.

Prevention is key

Finally, step four comes back to prevention.

Keep your car clean and free of stuff that cockroaches like. Institute a no eating in the car rule, don’t leave trash in it and don’t park it near wood or leaf piles. And your car should be roach-free for good!

How to get rid of cockroaches in a car naturally?

If you are looking for a humane way to get rid of roaches naturally then we have a solution for you – essential oils!

To quote the evaluation of some plant essential oils against the brown-banded cockroach “Oregano oil could be used as a potential repellent against S. longipalpa. Also, all five essential oils could be used as the safe compounds for surface treating or fumigation in cockroach control programs while rosemary and oregano oils exhibited the most toxicity.”

Additionally to essential oils, you can use cayenne pepper and garlic glove or powder.

Roaches hate the smell of these spices and oils so feel free to create a mixture of your own and spray them around your car interior and trunk.

These natural roach deterrents might not get rid of cockroaches in your car completely but are well-known and commonly used for roach prevention. Alternatively, you can buy roach repellents.

To sum it up

  1. Eliminate roaches right away when you see them and don’t let your car become a breeding ground!
  2. Avoid eating or drinking in the car. I know this might sound too much but you should be aware that spilled food attracts all kinds of pests, including roaches.
  3. Clean and wash your car regularly to prevent cockroaches from finding food sources.
  4. Inspect surroundings. Is your car parked near the trash bin? Is your garage a good environment for a roach infestation? Don’t underestimate these pests and take care of your surroundings before it’s too late.
  5. In case of a chemical roach control product usage – wait a few hours before driving and don’t forget to ventilate and clean your car to prevent any health consequences and risks.

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