Method 1: Pour vinegar into the pool, pick up the container and shake it, so that all the places with scale are soaked in vinegar. After shaking several times, leave the container for about 20 minutes. After 20 minutes, it can be found that the scale has begun to fall off. In order to remove the scale more cleanly, warm water can be poured into the container to submerge the place with the scale. Soak for about half an hour, the longer the time, the better the effect. After soaking, it can be found that almost all the scale at the bottom of the container falls off. Just cleaning the container.

Method 2: Slice the lemon and put it in a graduated container. If the container can be heated, it can be heated to make the water boil, and then it can be easily placed without moving 10 minutes or so. If the container cannot be heated, it can be poured into the container and soaked for 20 minutes. The higher the temperature, the better the dissolution effect.

Method 3: egg shell descaling. After eating the eggs, the eggshells can be put away. Put the egg shell into a graduated container. Add 2/3 water and shake for 10 minute. The principle of this method is physical principle, because the egg shell and water can effectively remove the scale in the container by rubbing against the scale in the container through vibration force. This method requires adding eggshells according to the size of the container. Method 4: starch descaling. Potatoes, potatoes and other starchy foods, put potato skins, sweet potato skins, etc. Put it in a graduated container, empty the container and leave it for about half an hour. Because starch has adhesiveness, this method is suitable for scale containers with thin scale, but not for very hard scale. _