1. Use acidic substances to remove scale, such as vinegar and acetic acid, and use the chemical reaction of calcium carbonate and acid to generate water and carbon dioxide.

2. Use special cleaner to remove scale.

3. Remove scale with baking soda. When boiling water in an aluminum pot with scale, add 1 teaspoon baking soda and boil for a few minutes, and the scale will be removed.

4, with magnetization, put a magnet in the pot, not only does not scale, boiling water is magnetized, but also prevents constipation and pharyngitis.

5. Use a mask to prevent scale accumulation. Put a clean mask in the kettle. When boiling water, the scale will be absorbed by the mask.

6. Remove scale by thermal expansion and cold contraction. Put the empty kettle on the stove to dry the water in the scale. When the bottom of the pot cracks or there is a "bang" at the bottom of the pot, move the pot away and quickly inject cold water, or wrap the handle and spout with a rag and hold it with both hands, and quickly sit the dried pot in cold water (don't let water inject into the pot). Repeat for 2 to 3 times, and the scale at the bottom of the pot will fall off due to thermal expansion and cold contraction.