Seeing a few ants inside your home can be surprising, but in many cases it can be handled easily.
This guide explains what to check, what you can do yourself, and when to contact the management company.
1. First: Check the Situation
Please check the following points:
How many ants did you see?
✅ A few ants (1–10)
⚠️ Many ants or a continuous line
Where did you see them?
Kitchen / near food
Bathroom
Entrance / window
Did it happen only once, or every day?
👉 These details help us determine the cause.
2. Common Reasons Ants Enter Homes in Japan
Food crumbs or sweet drinks
Trash not sealed tightly
Windows or doors opened for ventilation
Seasonal activity (spring–summer is very common in Japan)
⚠️ This does not usually mean the building has a problem.
3. What Residents Can Do (Recommended First Step)
For a small number of ants, residents are kindly asked to handle basic pest control using store-bought products.
✔ Immediate Actions
Clean the area with water and detergent
Wipe away any food residue
Seal trash bags tightly
Avoid leaving food uncovered
4. Recommended Ant Control Products (Easy to Find)
You can buy these at drugstores, home centers, and discount stores.
🛒 Recommended Products
1. Ant Spray (Fast action)
Example: Kincho Ant Spray, Earth Ant Spray
Good for killing ants you see immediately
2. Ant Bait / Ant Traps (Long-term solution)
Example: Kincho “Arinosu Korori”, Earth Ant Bait
Ants bring poison back to the nest (very effective)
3. Ant Barrier / Powder (Prevention)
Used near entrances, windows, or cracks
Prevents ants from entering
Where to Buy
You can find these products at:
Home Centers
- JUNTENDO
- Komeri
Cainz
Drugstores
Wants
Online
Amazon Japan
Rakuten
👉 Staff may not speak English, but showing the product name or “ant spray / ant bait” usually works.
5. When to Contact the Management Company
Please contact us if:
You see a large number of ants
Ants appear every day for several days
You suspect ants are coming from inside walls or floors
Other residents in the building have the same problem
6. Summary
| Situation | Who Handles It |
|---|---|
| A few ants inside | Resident |
| Seasonal / food-related ants | Resident |
| Large infestation / building issue | Owner (via management) |
If you have any concerns or if the situation gets worse,
please feel free to contact the management company anytime.