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Possibly, your bathroom waterproofing is not done well
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It is possible that there is a problem with the waterproof layer of the floor drain.
You can see if the walls of the next house are wet.
If it's wet, it's probably a drain problem.
Generally, after the house is renovated, the bathroom is not done well, and within 1-2 years, there will be water leakage and dampness.
If you don't want to find someone, go downstairs and pass it yourself.
In the kitchen, take half (or all) of the hallway wall to decorate it into a shoe cabinet.
Carefully inspect drains, cracks in walls, floor partitions and windows to prevent cockroaches from entering. 2. Keep the room dry, cockroaches mostly live in a humid environment, so you should be careful not to have any water leakage, especially in the kitchen. 3. Keep the room clean, in a clean, dry environment, cockroaches will feel unwelcome,: >>>More
As soon as you enter the door, there is a bathroom wall on the right, and on the left is the living room, there is nothing bad, this type of house is very common.
You can exclude them one by one by following the steps below; >>>More