Complete Guide to Pest Control in Rental Apartments — Prevention, Elimination, and Cost Coverage from Move-In to Move-Out

Living in a rental apartment, many people face troubles with cockroaches, ants, centipedes, fleas, and other pests. Older buildings and properties near buildings with food establishments are particularly susceptible to pest infestations. This article breaks down pest control in rental apartments into three stages: before move-in, during residence, and at move-out, with detailed explanations.

Pre-Move-In Pest Risk Assessment

Property Selection Checklist

By checking the following points during your apartment viewing, you can identify properties with high pest risk.

Building and Surrounding Environment

• •Restaurants, supermarkets, or convenience stores in the same building or directly below: These are common entry routes for cockroaches
• •Nearby rivers, irrigation channels, or rice paddies: Mosquitoes and centipedes are more likely to appear
• •Bicycle parking or garbage disposal areas inside or near the building: These can be breeding grounds for fruit flies and other flies
• •Vacant lots or overgrown areas nearby: Increased risk of termites and dust mites

Interior Property Inspection

• •Check for gaps around pipes in the kitchen and bathroom (visual inspection)
• •Inspect vents under the floor and in the ceiling for damage
• •Check if garbage or food debris from previous tenants remains (inspect during viewing)
• •Look for cracks in walls and gaps around windows

Questions for the Real Estate Agent or Building Management

• •Ask directly: "Have previous tenants experienced pest problems?"
• •Confirm whether pre-move-in cleaning and disinfection are performed

Pre-Move-In Interior Disinfection Services

Many real estate companies offer interior disinfection services at move-in, including fumigation treatments and professional pest control. These typically cost around ¥20,000–¥30,000 and are often optional, but they are an effective choice for those concerned about pest risk.

However, there are cases where fees are charged even when the service is optional. Always confirm the contents and costs in the estimate and clarify whether the service is mandatory or optional.

Pest Prevention During Residence

Basic Cockroach Prevention

Cockroaches mainly enter through these routes:

• •Drainage pipes, ventilation fans, and air conditioning drain hoses
• •Gaps around entrance doors and windows
• •Cardboard boxes and items brought in from outside

Prevention Methods You Can Do Yourself

1. Placement of cockroach bait (such as Black Cap): Poison baits are effective in spreading throughout cockroach nests. Place them in dark areas such as under the kitchen sink, under the bathroom sink, under the refrigerator, and around the washing machine.
2. Installation of drain covers: Use mesh covers for sink and bathroom drains.
3. Treatment of air conditioning drain hoses: Install a protective cap on the outdoor unit's drain hose (cockroaches can enter through this route).
4. Early disposal of cardboard boxes: Cardboard boxes left in place for long periods become cockroach breeding grounds.
5. Sealed storage of food: Transfer opened food items to ziplock bags or airtight containers.
6. Regular cleaning: Keep the stovetop, drains, and area around the refrigerator clean after cooking.

Other Pest Control Measures

Fruit Fly Prevention

• •Regularly use specialized gel cleaners in drains.
• •Place organic waste in a covered trash bin and dispose of it frequently.
• •Install fruit fly traps (yellow sticky sheets or chemical types).

Mosquito Prevention

• •Check window and ventilation fan screens for damage and have them repaired (contact building management).
• •Use indoor mosquito repellent products.
• •Prevent water from accumulating on the balcony (such as in plant pot saucers).

Dust Mite Prevention

• •Regularly air bedding, carpets, and tatami mats in the sun or use a dryer.
• •Keep indoor humidity below 60% (use a dehumidifier or air conditioning dehumidify function).
• •Use a bed dryer or vacuum cleaner's bedding attachment.

Termite Prevention

• •In wooden buildings, confirm whether termite prevention treatment was applied before move-in.
• •Contact building management if there is excessive moisture under the floor.

How to Handle Pest Infestations

Emergency Measures You Can Take Yourself

When Cockroaches Appear

1. Use fumigation treatments (such as Barsang or Earth Red) throughout the room.
2. Reinstall poison baits to prevent population growth.
3. Seal entry-point gaps with putty or caulk (within the limits of restoration obligations).

Note: When using fumigation treatments, cover dishes and food, and provide advance notice to neighbors (in apartment buildings).

When to Contact Building Management

In the following situations, you should consult with or report to building management rather than handling it yourself:

• •Large-scale or repeated infestations (possible structural issues with the building)
• •Termites are discovered (structural damage to the building is a concern)
• •Pests are entering from neighboring units
• •Pest infestations in common areas (hallways, elevators, garbage disposal areas)

Building management has the obligation to manage pests for the entire building. In particular, termite infestations and large-scale cockroach infestations can be addressed as issues affecting the building's maintenance.

Cost Responsibility Considerations

Who Pays for Pest Control Costs?

Generally, pest infestations caused by the tenant's daily living habits are the tenant's responsibility. Conversely, if the infestation is caused by structural problems with the building (gaps in pipes, deteriorated vents, etc.), the landlord or building management may bear the costs.

Situations Where Tenants Typically Bear Costs

• •Infestations caused by leaving food out or unsanitary conditions
• •Pests brought in through items or cardboard boxes

Situations Where Landlords or Building Management Typically Bear Costs

• •Caused by structural defects in the building (gaps in pipes, deteriorated openings)
• •When it is likely that the infestation existed before move-in
• •When pests originate from a food establishment tenant on a lower floor

Cost Responsibility at Move-Out

If damage caused by pests (cockroach droppings, dead insects, termite damage to flooring, etc.) is discovered at move-out and is determined to be caused by the tenant's poor maintenance, repair costs may be charged.

According to the Ministry of Land, Infrastructure, Transport and Tourism guidelines, wear and tear from normal use is the landlord's responsibility, but "damage caused by neglecting to clean" can be the tenant's responsibility. Regular cleaning and proper pest management are the best ways to prevent move-out disputes.

Summary

Pest prevention in rental apartments emphasizes prevention above all else. By combining pre-move-in property inspection, move-in disinfection, regular cleaning, and the use of pest control products, you can prevent most pest problems.

If an infestation does occur, address it early, and if it is due to structural issues with the building, consult proactively with building management. Regarding cost responsibility, reviewing the lease agreement and property information sheet before move-in will help prevent disputes at move-out. To maintain a clean and comfortable rental living environment, make pest prevention a daily habit.

What should you do if you discover a water leak or rain damage in your rental? This guide explains practical steps from emergency response to notifying your landlord, the rules for repair costs, and compensation for damaged belongings.