Why do cockroaches come out at home and what causes them in their daily lives?
Sep 16, 2025
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Cockroaches are highly fecund and adaptable depending on their environment, so even minor habits can easily appear. It is much easier to prevent if the cause is accurately identified, such as food management, moisture removal, and niche inspection. Let's make a pleasant house without pests with small changes in our daily lives.
food waste and garbage left unattended
Cockroaches like human food the most. Crumbs dropped on the kitchen floor, food left on the table, and food waste piled up overnight can secure enough food. In particular, if food is not placed in an airtight container, it is attracted to the smell and gathers quickly.
Let's keep food in an airtight container and throw away trash every day. The kitchen must be cleaned clean to reduce cockroach inflow.
pet food exposure
Pet food and water bowls are also great food for cockroaches. The feed left in the bowl overnight attracts cockroaches, and the moisture in the water bowl provides a breeding environment. It is effective to store feed in an airtight container and remove the bowl after dinner. Periodic cleaning of pet meal areas and cleaning of spilled feed immediately on the floor can reduce cockroach inflow. It is effective to keep your pet space clean.
a humid environment
Cockroaches have a habit of liking moisture. Places that remain wet, such as sinks, bathrooms, and around washing machines, are the best habitat. It is easy for cockroaches to gather and reproduce even if there are only water droplets and small pipe leaks from the tap. Use a dehumidifier, and let's ventilate often. Wipe the water in the bathroom and kitchen with a dry dishcloth, and immediately repair leaks to reduce moisture. Especially in summer, let's thoroughly manage moisture to block the breeding environment.
a drain and a gap
Cockroaches come in and out of apartments or old houses through drains, vents, and wall niches. Sewerage is the main migration channel and habitat for cockroaches, so cleanliness management is required. In particular, even small spaces, such as gaps where silicon has fallen off and small cracks on the floor, are a great passage for cockroaches.
Let's fill the gap with silicone and install screens in the door gap. Check inside and outside the house and block the access route.
a hiding place like a pile of paper, boxes, and clothes
Cockroaches hate light and live in the dark. Stacked paper boxes, piles of newspapers, old clothes or blankets are good spaces for cockroaches to lay and reproduce. In particular, items left in warehouses or multipurpose rooms become breeding spaces for cockroaches. Organize unused boxes and clothes, and put them in an airtight container when storing. Cleaning the multipurpose room periodically, and storing clothes after washing can remove the cockroach's hideout.
an inflow from outside
No matter how clean the house is, cockroaches can come in from outside. Especially in spaces where building structures are connected, such as apartments and multi-family houses, they are easily introduced from next door, upstairs, and downstairs. In some cases, such as delivery boxes and used furniture, eggs are attached to items imported from outside, so caution is needed.
Let's install insect repellents or traps, and ask the management office for joint control. Reduce cockroach problems through cooperation with neighbors.
inappropriate cleaning habits
Irregular cleaning provides opportunities for cockroaches to settle down. Fine food debris or dust left on the kitchen, table, and floor becomes food for cockroaches. In particular, it is easy for cockroaches to hide in cleaning blind spots such as under the sink or behind home appliances. Clean every corner with a vacuum once a week, and wipe the kitchen floor with kitchen detergent. Let's throw away the trash immediately after cleaning, and disinfect cleaning tools to maintain hygiene.
The reason why cockroaches come out of the house is usually simple. Food management, moisture removal, feed storage, niche maintenance, and cleaning habits can greatly reduce the frequency of appearances. Small life care is the surest way to create a pleasant home without pests.
This article was translated by Naver AI translator.
