How to remove dirty hotel cups?

1, clean water washing method, if the water cup smells after a long cleaning time, we can soak the water cup in boiling water for about ten minutes. After washing, the smell will disappear.

2, alkaline surface chemical reaction method, alkaline noodles and baking soda powder can also remove odor. We can put some baking soda or baking soda in the glass, and then pour clean water into the glass.

3, milk cleaning method, if there is milk at home, you don't have to buy it specially, just drink the rest. Pour the milk into the glass and wash it, then rinse it.