There are a lot of bathrooms, and black bugs will fly, as if they came in from the sewer, and they c

Do not smoke with sulfur, the toxicity of sulfur is very strong, within a certain range around the sulfur mine, if the flue during refining has not been treated, the ground is weeds do not grow, you can know its toxicity. The best way to prevent insects is to make screen doors and windows. The price is not expensive, simple and practical. >>>More

First seal the floor drain and the place where the water is drained. Generally, the height of the water seal may not be enough.

According to your description, I will give you a reference: the water from washing the cement bucket is poured into the squatting pit, and it is possible that the cement has formed a lump in the sewer pipe, depending on how you ask someone to deal with it. The best way to deal with it is to go downstairs and uncover all the ceilings of his house, and unscrew the lid of the inlet in the sewer to remove all the accumulation inside, of course, this method will be very troublesome and affect the lives of others. >>>More

See if there is no water isolation between the drain pipe and the floor drain, he climbs up along the pipe wall, and add some water to isolate it.

This is the scale that forms on the wall of the pipe after the nozzle joint on the top of the drain pipe is loose and rainwater seeps in. Now the air pollution is serious, and the dust inside the rain forms acid rain.