Face masks have become a literal “must-have” accessory when stepping outside. With state and local governments encouraging people to donate any medical-grade N95 masks to healthcare workers, many people are using cotton or other cloth masks to run errands. So what is the right way to clean a reusable face mask? Women’s Day editor Meghan Murphy says that hot water and detergent are key, as the virus can live as long as 7 days on cloth. But don’t even think about disinfecting in the microwave!