Where do cockroaches come from?

Content Updated: August 6, 2025

Key takeaways

• Cockroaches prefer warm, humid environments and thrive in dark, moist spaces like kitchens and basements.
• There are many ways for a cockroach to enter your home, including through cracks and gaps, plumbing, open doors or windows, and neighboring infestations.
• Sugary, starchy, and greasy foods are very attractive to cockroaches, and leaving food out can draw roaches into your home.
• Cluttered, secluded areas away from people and light—like inside appliances—are appealing hiding spots for cockroaches.
• Cockroaches are hardy—even a clean home or living space can provide a cockroach with what it needs to survive.
• Roaches can carry harmful pathogens, so they’re not just nuisances—they're also dangerous. If you have a serious problem, consider calling a professional for treatment.

Why do roaches come inside

Roaches seek out food, water, and shelter, which makes homes a prime target for infestations. But where do cockroaches come from, and how do cockroaches get inside your house?

If you notice roaches in your home, it may seem like they appeared out of nowhere. Cockroaches are nocturnal, so their nighttime activity can easily go unnoticed until a large population is present. Their rapid breeding cycles can lead to sudden population surges, and outdoor construction or renovations can disturb their hiding places, causing them to seek shelter indoors.

Recognizing the early signs of an infestation and taking action right away is vital for protecting your home. Terminix’s roach control services can help eliminate these pests and prevent them from returning.

Jump to section:

• Where do cockroaches live?
• How do cockroaches get in the house?
• What attracts cockroaches to your home?
• Where do cockroaches hide?
• Why do I have cockroaches in my clean house or apartment?
• How to get rid of cockroaches

Where do cockroaches live?

Cockroaches thrive in warm, humid environments and are often found in tropical and subtropical regions—though they can also be found in temperate zones in the United States.

Roaches living in homes prefer dark, moist, and undisturbed places like basements, kitchens, or sewers. Areas with abundant food and water are the most appealing to these pests.

How do cockroaches get in the house?

When you see a cockroach in your home, you may be wondering how in the world it got there. These pests may have been present in your home before you arrived, or they could have come from neighboring properties or directly from outdoor areas.

In fact, many houses have numerous entry points that are easily accessible to roaches, including:

• Cracks and gaps: Cockroaches can easily enter through small cracks and gaps in walls, floors, and foundations.
• Open doors and windows: Roaches can slip in through doors and windows left open or without screens.
• Plumbing and vents: They can travel through plumbing pipes, drains, and vents.
• Grocery bags or packages: Roaches can hitch a ride on bags, boxes, and packages brought indoors.
• Second-hand furniture: Used furniture may be infested with roaches or their eggs.
• Basements and garages: They often enter through basements and garages, which are more accessible.
• Neighboring infestations: Roaches from nearby homes or apartments can migrate to yours.

What attracts cockroaches to your home?

Like every living creature, cockroaches need food, water, and shelter to survive, and human homes can provide all three in abundance. They’re also notoriously opportunistic, especially when it comes to their diet. As scavengers, roaches are omnivorous and aren’t picky in the slightest. Cockroaches can eat many things that most people wouldn't normally suspect, including:

• Wallpaper glue
• Human or pet hair
• Dead skin flakes
• Feces
• Toothpaste and soap

Though different species of cockroaches have varying dietary preferences, the things that attract cockroaches the most include:

• Sugary, starchy, and greasy foods
• Open food containers
• Left-out pet food
• Dirty dishes
• Standing water or leaks

Where do cockroaches hide?

Roaches prefer cluttered, warm, and secluded areas away from people and light, such as dark crevices, cracks, and corners. This makes appliances an especially great place for them to hide. If there's access to water nearby, that makes it even more ideal.

Each cockroach species has a preferred environment, which is why it is so important to call a pest control professional if you have a roach problem. They can quickly identify which species of roach is in your home and ensure the most effective treatment. Below are some of the most common cockroach types in the United States.

German cockroaches

German cockroaches are the most common indoor roaches, particularly in multifamily residences. German cockroaches prefer dark, warm, and humid places near food and water. They're usually found in kitchens and bathrooms. Check cracks and crevices in cabinets, near sinks or appliances, or in food preparation and storage areas.

Oriental cockroaches

Oriental cockroaches prefer cool, damp, and dark places. Outdoors, you'll find them in areas where there's organic matter, such as mulch and woodchips, underneath patio bricks and sidewalks, and between soil and the foundation. Indoors, you'll see them in basements and crawl spaces near leaky water pipes, refrigerators, washing machines, and under sinks.

Brown-banded cockroaches

Brown-banded cockroaches like warm and dry places. They live in high or elevated areas, typically at eye level or above. They may be hiding in cabinets and pantries, closet shelves, among books, or in shower stalls. This roach can also leave small, dark, and cylindrical droppings in homes.

American cockroaches

American cockroaches are known to inhabit restaurants, grocery stores, bakeries, or anywhere food is prepared and stored. They prefer warm, moist spaces in areas like boiler rooms, basements, around pipes and water heaters, and near wet floor drains. They are also common in sewer systems.

Why do I have cockroaches in my clean house or apartment?

While a dirty house may be more attractive to roaches, even a perfectly clean home can draw in these pests. A clean house or apartment can still have a water source, a food source, items that provide shelter, and a nice dark corner for roaches to call home. Not to mention, roaches can go weeks without food, so even if nothing’s being left out in your home, they can still survive.

Cockroaches can also inadvertently be brought into homes from external sources such as neighbors or landscape plants, so even if you keep your living space spotless, these pesky insects can still find their way inside.

How to get rid of cockroaches

Prevention is the first step when it comes to protecting your home from cockroaches. Here are some general tips that can help stop roaches from infesting your home:

• Discard empty boxes and cardboard immediately. These are a favorite breeding ground for roaches.
• Seal holes in common walls between apartments and around plumbing pipes.
• Use window screens and seal openings around doors and windows.
• Immediately clean up spilled food and crumbs, and don't leave dirty dishes out overnight.
• Store food in airtight, sealed containers.
• Put garbage in a sturdy container with a tightly fitting lid.
• Fix leaks in pipes and faucets, and use a dehumidifier to reduce humidity levels in damp areas like basements and bathrooms.

Cockroaches aren’t just a nuisance—they can carry dangerous pathogens that cause disease, including foodborne illnesses. They also produce various allergens that can trigger allergies and even asthma attacks from the discarded exoskeletons and feces that they leave behind. That’s why it’s important to get a roach problem dealt with as soon and as effectively as possible.

Cockroaches are one of the 25 pests covered by our ongoing pest control plan, PestFree365. Our plans provide multipoint interior and exterior inspections and regularly scheduled pest treatments. Don't wait to act if you're experiencing signs of an infestation!