Clean or replace your mask every day
Change your mask as often as you change your underwear
Once a mask is used, it will begin to pick up dirt, moisture, bacteria and potentially viral particles from you and the environment. The static charge that traps incoming and outgoing droplets will weaken with use, making your mask less effective.
To be as safe as possible, replace your disposable masks every day. If you’re using a cloth mask, wash it in hot water with a mild detergent daily, either in a washing machine or by hand. Dry the mask afterwards and insert a fresh filter filter.