The plumber suggested a cheap way to get rid of any blockages. I didn’t believe it until I tried it myself

You need to pour regular baking soda (half a glass) and salt (half a glass) into the drain. Mix everything well.

After this, pour in 9% vinegar (about a quarter glass or a little more).

And immediately after the vinegar, pour boiling water (one liter) down the drain.

Leave for about half an hour to an hour.

After a while, turn on the hot water and let it run for an average of one to three minutes.

This simple method is no worse than store-bought products in cleaning pipes, removing blockages and, moreover, completely eliminating the unpleasant sewer smell.