What to prepare
It will take about 100 g of ordinary baking soda and 100 ml of acetic acid (or 250 ml of vinegar).
Cleaning process
Pour soda from the pack into the drain hole, push it in as much as possible with your fingers, try to fill the entire internal volume of the siphon.
Pour vinegar into the sink slowly. A chemical reaction will immediately begin with the release of a large amount of carbon dioxide.
To improve the effect, you can once again pour soda and add vinegar.
Wait 4-5 minutes. After the gas has stopped flowing out, turn on the water and check the result.
If the drain has worked - excellent, if not, then you can repeat the whole procedure again.
The principle of the method
Understanding the nuances will simplify the cleaning process. The reaction of soda with vinegar produces salt (sodium acetate), water and carbon dioxide. Sewer cleans carbon dioxide. It creates a lot of pressure and breaks through clogging places, but for this gas should not freely leave the drain and overflow openings. They must be tightly closed - the pressure will increase and make a hole in the plug. But as soon as it appears, regardless of size, the pressure drops and cleaning stops.
A large number of bubbles on the sink drain indicates that the process is inefficient. Carbon dioxide freely leaves, pressure in pipes does not increase, the result of actions is close to zero.
Conclusion
The method does not belong to the category of very effective, a positive effect is rarely achieved and only on weak blockages. In addition, after a short time, the problem reappears.
The method is recommended to be used as a short-term drain recovery. The fact is that sewer pipes are clogged over a long length, and not just in a limited area. A small hole in one place does not solve the problem. If it is not possible to make a thorough cleaning of sewer pipes, it is recommended to have a rubber plunger on hand and periodically break through blockages.
Also disassemble and wash the siphon - https://washerhouse.com/3/en/4553-kak-ustranit-zasor-v-rakovine-v-domashnih-uslovijah.html
It is also recommended to wash the drain with boiling water, at least once a week.
