Generally, you can pour a proper amount of vinegar into the kettle, then fill it with water and leave it for about an hour to clean after boiling. If you don't have white vinegar at home, you can use old vinegar instead.

2. tea:

Generally, tea can be used to remove the scale from the kettle. Pour the leftover tea residue and hot water into the kettle, shake it for a while, and leave it for half an hour to clean the scale.

3. Descaling agent:

It can be cleaned by special scale remover or scale.

4. Lemon:

Lemon can remove the scale under the kettle. First, slice the lemon. After slicing, put boiling water into the kettle and let it stand for a while, so that the scale under the kettle can be cleaned.

5, egg shell:

Generally, broken egg shells can be shaken vigorously with water, which can clean the scale well.