When we buy plastic water cups, we can tell whether the plastic water cup is good or bad by smelling the smell. Even if the new one smells, it will not have a very special odor, but some inferior plastic cups can smell pungent as soon as they get close. Inferior plastic smell or rubber smell, indicating that the quality of this cup is very poor, try not to buy it.

In addition, the newly purchased plastic cups need to be cleaned and disinfected. The disinfection methods of plastic water cups are as follows:

1. Put a few slices of lemon and orange peels, or a few drops of vinegar in a glass, and soak overnight.

2. When the milk expires and you can’t drink it, you can put a rag in it and soak it to wipe the cup, and the dirt can be quickly removed.

3. Soaking rice water overnight is also a good method.