My family lives on the second floor and the sewer is often blocked.

Dredge the drainage pipeline with caustic soda or directly with boiling water. Dredge back and forth at the sewer entrance and exit, and rinse with water. If the pipe blockage is not serious, pour one tablespoon of washing powder into the sewer pipe and three cups of hot water.

The blockage of the kitchen sink can generally cause this place to be blocked, basically because a lot of food residues and oil stains have accumulated in the sewer. At this time, you can pour some washing powder and baking soda into the sewer. Pour this into hot water, and the washing powder and baking soda can be quickly dissolved in the hot water, and the oil in the water pipe can be removed, so that the blocked things can be well dredged.

Matters needing attention in the use of sewers

Please don't pour cooking oil and vegetable residues into the sewer. This kind of waste will cause sewer blockage. ?

Please don't directly pour waste such as toilet paper, paper towels, rags and steel balls for basin washing into the sewer. These wastes will neither dissolve nor be easily washed away by water, which will block the elbow of the sewer, resulting in poor drainage or even complete blockage.

Refer to the above? Baidu encyclopedia-sewer