What Causes Roaches?

Roaches are very good at hiding and scurrying away quickly, so you might never actually see roaches unless there is an infestation. They are insects that live in habitats such as sewers, animal burrows, and even your home. There are several reasons why roach populations grow to the point of infestation.

Roaches forage for food and water just like any living creature. They can be found in kitchens and bathrooms where food and water are most accessible.

Cockroach colonies can breed exponentially quickly, meaning that a small number of roaches can turn into what seems like an infestation overnight.

Roaches aren’t welcome because they can spread germs that cause food poisoning and other illnesses to people and pets. Read on to learn more about what causes roaches and how to prevent them from coming into your home in the first place.

Causes of Cockroaches

Cockroaches are often found in homes that have food or garbage lying around on the floor. They are also common near drains that are left open after taking a shower or washing dishes. Roaches are attracted to water, so if you have an infestation it might be a good idea to inspect your shower or kitchen sink for leaks.

Roach infestations can also be caused by a lack of sanitation, so it is important to keep your home clean. However, some of the possible causes of roach infestations are given below:


Lights are what attract roaches into homes in the first place. If you see roaches in your home it might be because too many lights are left on at night. Roaches like dark and damp places, but too much light causes them to flock to your home for warmth.

roach in light

Flying roaches can get into a home through open doors and windows, especially in rooms that are close to lights.

What you can do about it:

  • Closing your all curtains
  • Keeping all lights off in the late night in the kitchen and bathroom.
  • Close all window blinds at night or when going out.
  • Tighten up all open windows and doors.


Roaches can’t survive without shelter. They need to hide in dark and moist places to stay alive, so they look for shelter in homes. Roaches love to hide in the cracks of walls, floorboards, and furniture.

Shelter roach

The shelter is the main cause of roach infestations. They come out at night to look for food and water, then scurry back into their hiding places.

Especially American roach and Oriental roach are excellent climbers. They get to the second floor by using heating pipes, water pipes, or raised foundations.

What you can do about it:

  • Vacuum all crevices and cracks in the home
  • Clean thoroughly under the table, fridge, kitchen countertop, cupboards.
  • Seal all open cracks with caulk.
  • Remove all clutter, especially stacks of boxes or papers.
  • Spray the baseboards, floorboard seams, and doorframes with boric acid.

Moisture and Humidity

Roach infestations are often caused by a lack of proper moisture and humidity levels in homes. Roaches need a moist environment to survive, so they are commonly found in homes with leaks, poor insulation, and moist basements. They made be attracted to dampness so even homeowners with dry basements may have a roach problem.

Cockroaches are also attracted to garbage and dust. So if the trash isn’t taken out regularly it will attract roaches. The smell of the garbage also encourages roaches to come closer.

What you can do about it:

  • Seal all possible leak ins ventilation and pipes in the basement.
  • Keep the humidity levels at a moderate level.
  • Use an air purifier to remove excess moisture from the air.
  • Remove all standing water from the sink, tub, and shower.


Roaches are omnivores which means they eat both plant and animal matter. Roaches love to eat things like sugars, starches, sweets, and grease. They can’t eat through plastic or glass, so they look for things like cereal boxes, spilled food, and dirty dishes in your kitchen.

roach food

They also look for food crumbs under the table, under the stove, and in areas where foods are kept. If you want to keep the roaches away follow the given instructions.

What you can do about it:

  • Clean up all spilled food or crumbs.
  • Store all food in tightly sealed jars, plastic containers with lids, or metal tins.
  • Don’t leave dirty dishes in the sink.

What Causes Roaches Infestation in Your House?

Have you ever wondered what causes cockroaches to be attracted to your clean house? It is sometimes very hard for some pest control companies to deal with the roach infestation in a house.

Some of the places in your apartment that might cause an infestation of roaches include:


The cause of roaches crawling out of the drains is that they are looking for water and insulation. They also look for food in your bedroom, so if you have spilled food or crumbs in the room they will come closer to look for it.

Once they get inside your bedroom they will start hiding in the dark spaces under the bed. As they are nocturnal creatures, you might notice them crawling out of the drains at night.

Roaches can easily hide and breed in the cracks of your bed’s headboard, footboard, and frame. They also like to breed in the dust under your bed.


Roaches are also attracted to bathrooms because of the moist environment. If you have a leak in your bathroom or there is a spot where water builds up every time, they will come out looking for a humid place.

Roach in bathroom

They also look for food in your bathroom, so make sure you clean the bathroom every day. You should also keep your toothbrush and toothpaste in a tightly sealed container. They will crawl in even in a tiny crumb so you should be very careful while you are cleaning.


The main cause of roaches in the kitchen is that you are not cleaning your dishes. If you leave food or dirty dishes in the sink, they will come for it. If you don’t clean the crumbs from under the table or stove, they will come close to look for food.

roach in kitchen

They breed in moist and dark areas of your kitchen, so the drain under your sink will be a great place for them to hide. They are also found in kitchen cabinets, cabinets under the sink, and kitchen appliances.

The main reason why roaches are found in the kitchen is that most of us made food here, so they will have a lot of food to feed on.

Say Goodbye to Cockroaches

Once you know what causes cockroaches, it will be much easier how to get rid of roaches without having them come back again later.

Roaches are very stubborn creatures and it is hard for them to change their habits. So if they come into your house looking for food, water, and shelter they will keep coming back.

You should also keep in mind that roaches can carry diseases so it is important for you to get rid of them immediately. There are several pesticides to eliminate roaches. Here we recommend you try to use:

You can also use effective home remedies for roaches that will help you get rid of them in your home.


Having roaches is a difficult problem to deal with, but if you follow the given instructions, it will be easier.

Cause of roaches crawling out of the drains: they are looking for water and insulation. They also look for food in your bedroom and kitchen so if you have spilled food or crumbs in the room they will come closer to look for it.

You can also use pesticides and traps to get rid of roaches in your home and use natural remedies to prevent them from coming back.

Now you learned what causes roaches, and you can also know how to keep them away.

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