However, after the thermos cup is used for a long time, a lot of dirt will be produced and attached to the cup wall. However, in order to keep the temperature for a long time, the mouth of the thermos cup is relatively small, which can effectively prevent the heat from emitting. But in this case, it will cause great trouble for the completion of cleaning, and it will be harmful to the body if it is not cleaned for a long time.
There are also some methods and techniques for cleaning thermos cups. Don't be afraid to use the right cup. The first one can use egg shells, and the use method is very simple. When cooking, you can leave the eggshell behind. Break the eggshell, then put it in a thermos cup and add a proper amount of water.
Cover the cup and shake it vigorously. You can scrape the dirt off the cup with a sharp eggshell. The second method is to use scale remover, some of which can help people clean cups well. However, after using the scale remover, clean the cup before using it to prevent the scale remover from eating into the body by mistake.
The third method is to use a cup brush, which is also a good tool for cleaning cups. You just need to put the sponge in the cup and you can clean it. But when people use the cup, they should clean it regularly, so that bacteria will not easily breed in the cup and form some substances harmful to the human body.