How to get rid of cockroaches in appliances?

Common household pests like cockroaches can infest your home’s appliances. They like warmth, food, and shelter in appliances like toasters, microwaves, and ovens, making them an appealing target for infestation.

However, cockroach infestations in appliances can harm your appliances and harm your health. In this article, you will explore how to spot, avoid, and eliminate cockroaches in appliances.

Why Cockroaches are Attracted to Appliances

Cockroaches are attracted to appliances for several reasons, including warmth, moisture, food and shelter:

  • Warmth: Being cold-blooded bugs, they require a warm place to survive. And appliances like ovens and toasters provide a warm environment, especially during cooler months.
  • Moisture: Appliances like washing machines and dishwashers are good sources of moisture, which are necessary for them to survive. They are also attracted to condensation or leaky pipes as they can find water there.
  • Food: Food residues left in appliances like toasters and microwaves give cockroaches a consistent food source. They can even survive and thrive on the smallest crumbs and spills.
  • Shelter: Cockroaches prefer small, dark areas where they can spend the day hiding and emerging at night to eat. Appliances like refrigerators and dishwashers can provide a perfect place to spend their lives.


The presence of cockroaches within appliances is a serious problem that can endanger your property and health. These bugs might contaminate food kept in appliances because they are drawn to moisture and food particles.

Salmonella and E. coli infections, allergies, and asthma can be spread by them. Chewing on cables and insulation can also result in faults and even electrical fires in appliances.

Therefore, Keeping your appliances clean, sealing any openings, and getting professional assistance in case of infestation will help avoid cockroach infestations in your appliances.

Identify the Problem

Identifying is the first step in solving the cockroach infestation in your appliances. Infestations can go undiscovered for a while, but there are a few signs you should watch out for, such as:

  • Feces: The insect leaves behind small, dark feces that resemble coffee grounds.
  • Shed skins: Cockroaches shed their skins as they grow, and you can find these skins close to infected equipment.
  • Egg casings: They produce multi-egg egg casings, which you can find close to infected equipment.

Cockroaches are nocturnal insects because they prefer to hide during the day and appear at night to feed. And they are attracted to warm and moist places to hide, such as refrigerators, washing machines, and dishwashers.

How to prevent it?

It is always better to take a prevention method rather than allowing cockroaches to build their families. As there is a risk to your health, here is a set of prevention steps that you can take to prevent cockroaches’ growth and save yourself from infection.

Keeping everything clean: Maintaining clean appliances is crucial because cockroaches attract food particles. To remove any food stains or spills, wipe off appliances like microwaves, toasters, and ovens after each use. You should also frequently clean out dishwashers and washing machines.
Maintain appropriate food storage:  Food should be kept in airtight containers to avoid cockroach infestations. Food shouldn’t be left out on kitchen countertops, and spills and crumbs should be cleaned immediately.
Seal cracks and crevices: Cracks and crevices should be sealed as they get into appliances through tiny gaps. Caulk or weather-stripping should be used to close any gaps. By doing this, cockroaches won’t be able to enter and infest your appliances.
Eliminate moisture: Cockroaches require moisture to survive; therefore, it’s vital to stop leaks or drips in equipment like washing machines and dishwashers. 

These measures will help you maintain your home sanitary and keep it free of cockroaches while preventing infestation on your appliances. If you already have cockroaches in your appliances, you should act right away and, if necessary, seek professional assistance.

Elimination methods

There are a few ways to get rid of cockroaches if you already have an infestation in your appliances:

Non-toxic Methods

Non-toxic solutions are a great option for those who want to avoid chemicals. The following are some efficient, non-toxic techniques for eliminating cockroaches in appliances:

  • Diatomaceous earth: Diatomaceous earth is a naturally occurring material created from the preserved remains of tiny aquatic organisms. It is abrasive and may cut a cockroach’s exoskeleton, resulting in dehydration and death. Sprinkle around appliances and in other areas where cockroaches are seen very often.
  • Boric acid: Cockroaches cannot survive in the presence of the white, powdered chemical known as boric acid. The cockroach dies as a result of the disruption to its neurological system. Place a mixture of boric acid, sugar, or another tasty substance close to appliances to draw cockroaches attention. 
  • Essential oils: Essential oils contain insecticidal effects and can keep cockroaches away. Examples include peppermint, tea tree, and eucalyptus. Spray some water and an essential oil mixture around appliances and other cockroach-infested locations. 

Chemical Treatments

Cockroaches can also be killed with chemicals, which can be dangerous for people and animals. If you decide to utilize chemical treatments, be sure to properly follow the directions and keep kids and pets away from the affected areas. 

Following are some chemical methods for eliminating:

  • Insecticidal spray: This kind of spray contains a chemical that kills cockroaches. Spray onto damaged areas and pay close attention to the usage instruction before applying.
  • Insecticidal foggers: Insecticidal foggers kill cockroaches by dispersing an insecticide mist throughout the space.
  • Insecticidal baits: These baits contain a poison that cockroaches consume and then transport back to their nest, where it kills additional cockroaches. Place bait next to appliances and pay close attention to the usage instructions.


Cockroaches in appliances might be difficult to eliminate sometimes, but doing so is necessary to avoid health issues and property damage. 

You may eliminate cockroaches in your appliances and keep a cockroach-free home by diagnosing the issue, adopting precautions, and applying elimination procedures.

Remember to keep pests out of your house; you must follow up with monthly maintenance and treatments. Cockroaches in appliances may be effectively eliminated with the appropriate strategy, enabling you to live in a clean and healthy environment.

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