Cockroaches in Your Basement? How to Eliminate Them

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No one wants roaches in their homes. They carry harmful bacteria and can roam freely in homes, contaminate food, and cause allergies.

Roaches might be attracted to dirt, but in most cases, no matter how clean you keep your home, they will still find their way in. While roaches are known to invade kitchens and restaurants, they can infest basements and apartments too.

Read More: Dealing With Roaches In Your Restaurant

A basement can be attractive to roaches because it offers favorable conditions, for instance, food, humidity, and hiding spaces. In addition, cockroaches prefer dark spaces like in your basement.

Dealing with roaches can be hard, particularly if you have no clue what you are dealing with.

Fortunately, roaches are treatable. Keep reading to understand more about where cockroaches in the basement are hiding, why they are in your basement, and how to get rid of them.

Factors That Attract Roaches to Basements

While going down the stairs into your basement, you might see some evidence of a roach invasion. For instance, you roaches smell oily or musty odor. You might also see droppings, or come across some roaches scurrying.

But why are they in your basement? Like all other pests, roaches require their basic needs to thrive. They need food, shelter, and water.

Besides, roaches will eat anything from book bindings to cardboard boxes, as they are opportunistic feeders.

Therefore, if any food in your basement is not sealed, roaches will come running into this space. Similarly, roaches will establish their nest in your basement if there are leaky pipes or stagnant water.

In addition, roaches that require high humidity levels, like the American cockroach, Oriental cockroaches, German roaches, and brown-banded roaches, will thrive in your basement, especially if it is poorly ventilated.

When compared to other parts of your home, basements are more humid. This is because most plumbing and water heaters are located down there.

On the other hand, the basement is less disturbed as there is little foot traffic. Remember that roaches love to hide from any threat, so any place with high foot traffic is unattractive to them.

Conversely, roaches love dark and secluded areas, so the basement becomes an ideal hiding spot since the lights are used less often.

Is a Single Cockroach a Sign of an Infestation?

No, a single cockroach is not a sign of an infestation. However, cockroaches are prolific breeders and can quickly multiply.

This means that doing nothing will make matters worse. Instead, pest management actions will be the best way to handle the case because you never know if the roach you saw is one of a large colony nesting in your basement.

Signs of Cockroach Infestation in Your Basement

cockroach egg
Image: Vijay Singh

A cockroach infestation can be hard to deal with. So, you must detect and eliminate the roaches as soon as possible.

Luckily, roaches leave behind pieces of evidence that will alert you of an existing colony or an impending infestation.

Be on the lookout for signs like:

  • Dead cockroaches
  • Oily or musty smells around your basement walls
  • Roach droppings
  • Egg capsules
  • Shed skin
  • Cockroach activity during the day

After seeing signs of a roach infestation in your basement, the next thing is to locate their hiding spots.

Read More: Full Guide To Eliminating Cockroaches

Where Do Roaches Live in a Basement?

Roaches live in different areas in a basement, particularly near water and food sources and where they are safe from threats. In your basement, roach species like the Oriental cockroach and American cockroach can tolerate cooler temperatures and hide there.

The Oriental cockroach and American cockroach live in sewers and can enter the basements through pipes connecting to the basement.

They have very thin bodies and can squeeze through tight spaces in the basement. Therefore, any crack or crevices in your basement is a perfect hiding spot for these insects.

On the other hand, roaches can be found in a basement near leaky pipes or stagnant water. So, pay attention to dripping or condensation from pipes in your basement that act as a harbor for roaches.

How Roaches Enter Your Basement

Roaches are attracted to homes searching for food, water, and shelter. So, if you come across a single German cockroach in your basement, knowing how it got there in the first place will significantly help you eliminate the roaches for good.

There are four common roaches that invade homes, namely, the American cockroach, German cockroach, Oriental cockroach, and Brown-Banded cockroach. So, it is essential to know how each can get into your basement to get rid of them completely.

American Cockroaches

american cockroach

American cockroaches are reddish brown with a light brown or yellow band at the back of their head. While they are not common, like the German and brown-banded cockroaches, they can still enter your home.

These pesky pests prefer warm, dark, and moist areas and mostly live outdoors in shady areas like:

  • Sewers
  • Drainage systems
  • Mulch piles
  • Hollow trees
  • Flower beds

American cockroaches can enter your basement through open windows or gaps under doors and garage and hide in your basement.

Read More: Get Rid of and Kill the American Roaches

German Cockroaches

german cockroach

This roach species is the most common and can quickly progress into a serious infestation as they are prolific breeders.

These roaches prefer moist and dark areas near food sources and are primarily attracted to garbage bins, pet food, and garden areas. They will hide under sinks, inside cabinets, drawers, and wall voids.

The German cockroaches can move into your house through cracks and crevices in the foundation, external walls, and vents. They can also hitchhike in boxes, electronics, and bags and will eventually reach your basement.

The German roaches can also move freely in ducts and utility pipes.

Read More: How to Get Rid of German Cockroaches Overnight

Asian or Oriental Cockroaches

oriental cockroach
Image: Katja Schulz

Oriental cockroaches, also known as water bugs, have a shiny black or reddish-brown color. They are outdoor roaches but can also survive indoors.

Outside, they can be found under leaf piles, debris, and firewood and will sneak into your home during warm months and seek shelter anywhere with high humidity levels, like your basement.

These roaches can enter your basement through floor drains, air ducts, utility pipes, door thresholds, or any opening in the foundation.

Oriental roaches are not picky eaters but prefer feeding on decaying organic matter or garbage. In addition, they seldom fly because they do not have well-developed wings.

Read More: I Found an Oriental Cockroach In My House: How to Get Rid of Them

Getting Rid of Roaches in Your Basement

The process of eliminating roaches in your basement is no different from eliminating them anywhere else in your home.

However, working with a professional pest control company is the best way to deal with a roach infestation.

But before you do that, try the following tips to DIY getting rid of cockroaches.

Make Sure Your Basement Is Properly Ventilated

Most cockroaches that end up in your basements are the ones that are sensitive to dehydration. When outside, these insects live in mulch or debris around your foundation.

So, do what you can to reduce the humidity levels in your basement. Start by fixing leaky pipes, cleaning drains, ensuring the area is clean, and using a dehumidifier.

Get Rid of Any Food Sources

Storing bulk items like pet food, bird seeds, and root vegetables in your basement might seem convenient for you.

However, you are feeding any pests living in your basement, including cockroaches. So, do not store food in the basement. In addition, avoid storing bagged trash or recyclables in your basements; roaches can feed on them too.

Examine Your External Foundation

Having roach species like the American, German, brown-banded, and Oriental cockroaches in your basement means a large roach population is around your home.

Therefore, make the foundation less welcoming by trimming any heavy bushes, reducing or getting rid of mulch, and removing wood, debris, or stone piles that might be stacked against your foundation.

Seal Openings

Are there spaces in your basement that roaches use as entry points? Make sure that all windows and foundation vents are screened. Also, caulk any openings where cables, electric lines, and pipes enter your home.

In addition, make sure that your basement doors are sealed tightly using sweeps or door thresholds. Finally, don’t forget to inspect your window wells for any cracks or gaps that roaches can use to enter your basement.

Use Insecticide Baits

Don’t worry if you suspect you have a roach problem but haven’t seen any. You can get rid of them by setting up baits in your basement.

Usually, roach baits are made of a food attractant and a slow-acting insecticide like boric acid. The roaches will find it, eat it, and crawl away to death.

Don’t worry about the roaches that did not get the chance to eat the cocktail baits; they will die too. Remember that roaches are opportunistic feeders that will eat even their dead relatives’ feces and saliva.

Make sure the baits are correctly situated, depending on the type of roach species in your basement and their preferred hiding places.

Create a Chemical Barrier

You can keep cockroaches from entering your basement by applying a chemical barrier at least two feet from the ground up, two feet from the foundation wall outward, and along the foundation and the ground.

You can also create a larger barrier if you want and ensure you follow all the instructions before using any products.

Clean Everything

cleaning your surfaces

Poor sanitation in your basement can result in an infestation. Besides, roaches can make book stacks, cardboard boxes, old magazines, and crevices in your basements their home.

So, try to organize your basement and clean it regularly.

Use Diatomaceous Earth

opening diatomaceous earth package

Diatomaceous earth offers a quick, effective, and pocket-friendly way to get rid of cockroaches in the basement.

Sprinkle Diatomaceous Earth powder in the corners of your basements, under window frames, doors, and other openings where you have seen roach activity.

Get Expert Help

Professional pest control is advisable when dealing with a serious cockroach infestation. Pest control companies have different ways of eliminating cockroaches in the basement.

Some can apply a specific number of treatments, like residual spray, and allow you to cancel the services once the roaches have disappeared.

Conversely, other pest control companies will need you to get annual pest control services, regardless of how long the treatment will take.

The expert will visit your home, perform a thorough inspection, and evaluate the need to use the residual sprays every month.

Keep Roaches Out of Your Basement

Your basement can be a home away from home for cockroaches as well as other bugs. Besides, roaches have thin bodies and can squeeze into tight spaces in your basement.

If you suspect roaches have infested your basement, examine the entire space and identify where they are hiding or nesting.

In addition, know what is attracting them to your basement and get rid of them. In case of a serious infestation, the best action to take will be to get expert help. 

A roach exterminator will help eliminate the roach colonies in your basement to avert extra damage and guarantee the safety of everyone.

Author

  • Brian White

    Brian White has been a freelance writer for the last few years and has worked for several online writing platforms, magazines, and newspapers. He delivers easily digestible content and has a solid understanding of how to skillfully break complicated content into easily understandable material, even to the average Internet reader. Outside work, Brian enjoys playing Chess online, tinkering with his garden tractors, and binge-watching Netflix shows with his lovely wife. Brian and his wife reside in South California.

    https://pestplaybook.com/author/brian-white/ White Brian