Common bottle brushes on the market include nylon bottle brush and sponge bottle brush. Nylon bottle brush is specially used to brush glass bottles, while sponge bottle brush is used to brush plastic bottles. The bottle brush is used to clean the bottle. After a period of time, the bottle brush is easy to damage or breed bacteria. At this time, the bottle brush is replaced. Then how long does the general bottle brush change? Brush the bottle is more diligent mother generally use the bottle brush after two or three months, it should be replaced, the quality is good and usually pay attention to the disinfection of the bottle brush for the first half of the year. Generally, the sponge bottle brush is easy to hide bacteria. After using the sponge bottle brush, it must be disinfected and placed in a dry and ventilated environment. The sponge bottle brush can't be used for a long time. After a month or two, you should replace it with a new bottle brush. The nylon bottle brush can withstand high temperature sterilization, and the nylon bottle brush can be boiled or steam sterilized in the sterilizer after use. Nylon bottle brushes can be used much longer than sponge bottle brushes. In addition to the problem of time, if the bottle brush is damaged or damaged, it should be replaced immediately, to avoid the bottle stained with the impurities of the bottle brush, and the baby will affect the health after taking it.