Here’s how to use a mask or bandage If you insist on using a mask or tie, then you should do it as follows: Be sure to keep the inside of the mask clean when you put it on. Be sure to adjust the mask properly to cover the entire mouth and nose region. When you take it off, make sure you do not touch the outside where the mask may be infected by the virus. Once you have used one gang, throw it away. Don’t reuse it. In addition, you need to pay attention to, on masks and mouthwashes quickly get wet and wet and in this way, they lose their function. It can vary dog depending on the mask you have.