The impeccable appearance of plumbing will save only regular cleaning.
The toilet, for obvious reasons, requires the most thorough care and regular cleaning, and the inside of the drain tank is no exception.
If you do not clean the drain tank from sediment, then over time a thick coating will form on its walls and the water drain mechanism, which can lead to breakage of the entire mechanism.
You can get rid of limescale and rust on the walls using acid, alkali and abrasive products.
You can clean the tank from deposits using folk remedies that are not specifically designed for these purposes, but effectively cope with this task. Among them: soda, vinegar, citric acid and cola.
In addition, you can use toothpaste, which is recommended to put in the tank.
Menthol will mix with water and remove unpleasant odors, and the sodium, potassium and fluorine contained in the paste prevent the formation of plaque on faience or ceramics.
The toilet after such a procedure will shine like new. Cleaning the toilet with toothpaste should be done after 2-3 days.
The way to solve the problem is one of the most cheap and effective.