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If there is no water leakage on the ceiling, the problem is not big and can be ignored.
The sound you hear is because the sewage pipe of the toilet is from top to bottom, and there is no one upstairs, but there will be people upstairs, and the sewage upstairs will pass through this sewage pipe, and there will naturally be a sound. 、
As long as it's not leaking water into your own home, there's no problem.
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It should be the sound in the water pipe, if no one lives upstairs, you can find a master to wrap that pipe, and you can't hear the sound.
Auditory hallucinations, see a psychiatrist.
Method, catch a cat, put some crumbs on the ground, and it will come down, most in a mouse trap, and that's it.
1. Use a sticky mouse board.
After the mouse board is bought, it is placed at the entrance of the mouse into the ceiling, and then fixed and waited for the mouse to come. >>>More
Serve it in the evening and put it somewhere else.
First of all, determine whether it is a water leak, if there is a water leak, you need to repair the water leakage problem first. >>>More