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1. Manholes and septic tanks are cleaned once in June in 3 months.
2. The exhaust of the toilet riser is smooth.
3. The installation of the water trap is reasonable, and the floor drain product is qualified.
4. Good ventilation and exhaust.
5. Good cleanliness and hygiene.
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Because they clean every day and have all kinds of deodorants.
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It's to spend money to hire cleaners to brush every day, don't be like a free toilet, you want to flush yourself, and there may not be water!
Why should the bathroom be locked, it's just a convenient place,
You see what causes it.
Some odors are caused by the fact that the sewers are not equipped with anti-bends. That's going to be overhauled. Shut down the original straight pipe and install the pipe with a reverse bend. >>>More
There is an error in the drainage connection of the wash basin; >>>More
That's because you didn't clean it, and after you cleaned it, use some freshener or a little sandalwood.