How To Get Rid Of Cockroaches In Dishwasher – Tips by an Expert Exterminator


Cockroaches are a bane of our existence because they don’t die quickly.

So it pretty concerns if you find an infestation of roaches in your kitchen, especially in your cabinets or appliances like a dishwasher.

Sure, there are ways to kill them, but this is your kitchen where the food that you will eat is stored and prepared. So using pesticides in such places can be harmful instead of being helpful.

Exterminating the roach infestation from your dishwasher is an essential step towards a healthier life. So as soon as you find one, deal with it immediately.

Why Are Cockroaches Living In Your Dishwasher?

Have you seen your dishwasher? Or any dishwasher, period.

There are moisture crumbs from leftover foods, which are a source of nutrition and perfect warmth; in short, if a cockroach wants to be lazy and spend all its life in the same place, it will do that. Joking aside, the dishwasher is the perfect place for cockroaches, and they can quickly produce colonies there. 

How To Get Rid Of Cockroaches In Dishwasher:

Use Of Vinegar:

You might be surprised to learn this, but the vinegar trick is not just for the oven; it can also work for the dishwasher. For the dishwasher, you will need to place a cup filled with vinegar on the top rack.

Then, you have to run the appliance for one hour at its hottest cycle. The resulting steam will quickly kill the cockroaches.

Even if they don’t die, they will at least crawl out of their hiding, where you can kill them. The side benefit of vinegar steam is the sanitization of the dishwasher, which is a blessing in these circumstances.

Apply Boric Acid:

Boric acid is considered to be one of the best cockroach repellents.

It is harmless to humans but deadly to these pests. Spread a small amount of this substance on the floor directly beneath the appliance.

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You can also apply some on the dishwasher base, but you have to make sure that the lining of boric acid is very thin, almost invisible to the eye. If it is thick and visible, the roaches can easily avoid it.

You can easily find boric acid in powder, crystal, or spray form from the nearest Wal-Mart. 

Regular Cleaning:

Just add one small chore at the end of the day, and that is to wipe down everything after its use.

This will help you maintain the cleanliness of your kitchen, but it will also cut off many of the food resources for the roaches.

Deep Cleaning The Dishwasher:

Remove all the racks and components from the dishwasher. Take a disinfectant and a rag, and apply them to the interior of the appliance. Wipe every crevice and corner thoroughly.

You can also fill the dishwasher dispenser with the detergent for dishwashing and run a cycle in the appliance to get rid of the remaining dirt, particles, or crumbs still left in the appliance.

Now, clean the racks, or just wash them if you can. Let it air out for a day, and then place everything back. Do this at least once a month. 

Drain Cleaning:

The drain is dark, tight, filled with moisture as well as crumbs from the leftover meals, which makes it the best possible place for roaches to live in.

By cleaning the drain, you will be able to cut off the biggest food source for cockroaches.

Use Natural Repellents And Traps:

There are many natural repellents that will keep away the roaches. This includes, but is not limited to:

  • Tea tree oil
  • Peppermint Oil
  • Cedarwood oil
  • Natural essential oils
  • Bay leaves
  • Mint
  • Cinnamon
  • Garlic

There are many other repellents that can be found in your kitchen, but these are the ones that won’t look bad even if you leave them lying around.

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Then there are non-toxic traps designed explicitly for cockroaches that can also be used in the kitchen without any fear.

Clean Your House:

So you have tried everything, but the roaches keep coming back. This means that it’s not just your dishwasher that is filled with these pests.

If you expand your search, you will find other places that are sustaining colonies of cockroaches. So keep your home clean. Vacuum regularly, and don’t leave food particles lying around.

Try to reduce the humidity and moisture in your home, especially in dark, tight places. Also, apply a disinfectant to other places so that roaches can’t find a place to live in your home. 

Contact Pest Control Services:

When all else fails, call the professionals. They will handle it. Just make sure that the company providing the service is reliable, has a good track record with past customers, and uses safe methods and disinfectants. 

For more information, fill the below-mentioned form to get free quotes from various local Pest Control companies so that you can choose the right and most fitting pest control for your roaches infestation problem.

Preventive Measures To Stop Roaches From Living In Your Dishwasher:

You might be aware of the phrase “an apple a day keeps the doctor away.”

Trying different solutions for getting rid of cockroaches in your dishwasher is all well and good. But you can also try some tricks to prevent the infestation from happening again or even squash the chance of cockroaches invading your dishwasher, to begin with.

  • Instead of letting the dirty dishes stay in there for a long time, just run the dishwasher as soon as it fills up. 
  • Make sure to remove all the crumbs before putting the dishes in the dishwasher.
  • Clean the dishwasher regularly, and deep clean it once after regular intervals of time.
  • Deep clean it once a month.
  • Drain all the dirty water after using the dishwasher.
  • Don’t leave food around without any covering outside.
  • Make use of natural repellents like bay leaves, cedarwood oil, or peppermint oil to stop the roaches from approaching the dishwasher.
  • Apply a natural disinfectant.
  • Seal every crack in your kitchen, especially the places from which roaches can enter the dishwasher.
  • Dispose of the trash and spoiled food as soon as possible.
Why Should You Get Rid Of Cockroaches In Your Dishwasher ASAP?

Other than common sense?
The first is personal hygiene. If not, would you like to eat from dishes that are already contaminated with an insect?
The second reason is to avoid the various health issues that are mentioned above.
Again, cockroaches can act as a trigger for an asthma patient, as well as carry bacteria and diseases like diarrhea, salmonellosis, cholera, dysentery, typhoid fever, etc. all your plates, bowls, and pans will get contaminated, and you won’t even know about it while cooking and eating in same dishes.


Cockroaches are famous for their resilience and can adapt to many situations. However, that does not mean that you can’t get rid of them.

The thing is, the dishwasher is a very delicate appliance, so you can’t just bumble your way in and hope for the best. You have to be mindful of the different components.

After getting rid of the unwanted pests, take all the related precautions so that you can avoid such a situation in the future.

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