1, soaking orange peel in water can remove the dirt on the cup, leaving a fragrance after cleaning, which is very practical.

2. Crush the egg shell into a cup, then pour some white vinegar, dilute it with water and simply shake it. After standing for a period of time, brush the cup and the inner wall of the cup will become clean.

3. Pour a proper amount of warm water into the cup, then sprinkle a spoonful of salt and stir it properly with chopsticks. After standing for 10 minutes, the dirt on the inner wall will gradually fall off, so just rinse one side.