Why Are There Suddenly So Many Cockroaches In My House? 10 Reasons Guide

Cockroaches are hated because they are considered to be dirty and unsanitary pests. They can carry diseases and can trigger allergies and asthma. Roaches can enter a home through small cracks and crevices, gaps around windows and doors, and through the sewer and drain pipes. These pests can also be brought into a home on items such as grocery bags, cardboard boxes, and secondhand furniture. Roaches can migrate from one neighbouring unit to another through the walls, floors and ceiling, especially in multi-unit buildings.

Reasons for Cockroaches in House

Why Are There Suddenly So Many Cockroaches In My House

Food sources

Cockroaches are attracted to food and scraps, so if there are more food sources available in your house, such as crumbs, spills or leftovers, it could attract more cockroaches. A cluttered kitchen or dirty dishes in the sink could make an ideal breeding ground for cockroaches.


Moisture is crucial for cockroaches to survive, so if there is a higher humidity level in your house, you are providing a suitable environment for cockroaches to thrive. Leaky pipes, damp basements or a humid climate could increase the moisture levels in your home, making it more hospitable for cockroaches.

Cracks and crevices

These insects can enter your house through small cracks and crevices. The cockroach can easily reach your home if there are more cracks and crevices in your home. These include gaps around doors, windows, or pipes, as well as any other openings in the foundation or walls.

Neighboring properties

Cockroaches can also enter your house from neighboring properties. If you live in a multi-unit building or a densely populated area, cockroaches could likely migrate from other homes and into your own.

Suitable Climate

Roaches are more prevalent in warm and humid climates. Cockroaches can easily enter your home if your home climate is suitable for them.

Poor sanitation

If you don’t maintain a clean and tidy environment, cockroaches will have an easier time finding food and shelter. It includes not cleaning up spills or food particles, not taking out the trash regularly, not washing dishes and keeping the kitchen clean.

Bringing new items

Cockroaches can hide in items you bring home, such as boxes, used furniture, or even groceries. If you recently moved or brought in new items from outside, it will cause cockroach infestation.

Availability of hiding places

Cockroaches like to hide in dark and undisturbed areas, such as inside appliances, behind walls, or in basements. The changes in your house can create hiding places for roaches.

Pest control

If you haven’t had your home treated for cockroaches in a while, it may be that the cockroaches have built up resistance to the methods you have been using. It leads to an increase in the cockroach population.


The overcrowding in an area also promotes the cockroach population. The more people, the more food and shelter are available, which could lead to a higher cockroach population.

How to Get Rid of Roaches in House?

  • Seal all cracks and crevices around windows, doors, and pipes to prevent cockroaches from entering.
  • Keep food in sealed containers and dispose of trash regularly to eliminate food sources.
  • Clean up spills and crumbs immediately, and vacuum and sweep regularly.
  • Fix any leaks or standing water, as cockroaches require moisture to survive.
  • Use a dehumidifier or air conditioner to reduce moisture levels in your home.
  • Use sticky traps or bait stations in areas where cockroaches are commonly found.
  • Regularly check secondhand items such as furniture, appliances, and cardboard boxes before bringing them into your home to ensure they are not carrying cockroaches.
  • Professional pest control treatment can also be an effective way to eliminate and prevent cockroach infestation.

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