It is normal that the rubber of electric toothbrush will turn black after long use. If you want to clean the rubber of the electric toothbrush, you can rub it repeatedly with alcohol or detergent. There is no need to replace the electric toothbrush. After cleaning, the electric toothbrush can continue to be used.
The moldy apron of the electric toothbrush can be coated with toothpaste on the toothbrush handle, then rubbed back and forth, and finally rinsed with clean water, and then a proper amount of vinegar is poured on the bottom of the toothbrush cup. After soaking the toothbrush in vinegar, dip a clean towel in the original salt and then wash it back and forth, which can basically solve these problems.
Although the electric toothbrush is a consumable, it can still be used for a long time. If these problems occur, they can be solved by themselves and do not need to be discarded directly. If you feel troublesome and don't want to clean, you can buy a new electric toothbrush to use.