The idea is to rotate the masks, not to throw them away. You wear one then let it sit alone, without being touched, for a week or more. The next day you wear a

The idea is to rotate the masks, not to throw them away. You wear one then let it sit alone, without being touched, for a week or more. The next day you wear a new mask then do the same to it. A week later you can go back and wear the original mask again. Throwing them away after 1 use would be silly. I personally have enough masks, and few enough indoors engagements, to let my N95 sit for a full month between re-uses.