The CDC says to wash cloth face coverings after “each use,” which leaves room for interpretation. From a report: The CDC notes that wearing a mask is a precaution to keep from spreading virus-carrying respiratory droplets to others. The idea is that if everyone wears a mask, the likelihood of the droplets getting sprayed around is much less. Each new study only provides further evidence that wearing face masks is a crucial component in slowing the spread of coronavirus. One recent paper, published by the Institute of Labor Economics in Germany, showed that masks may reduce the spread of COVID-19 by 40 percent. This is great, because wearing a mask is an easy thing to do, even if it’s a little irritating. But as we accept masks as just another thing that must be worn in public, I have to wonder: What’s the appropriate number to own — and how often should they be cleaned?

Personally, I have one mask, which I bought in March from a friend on Instagram. I wash it when it “smells dirty” by swirling it around in a takeout soup container filled with hot water and laundry detergent, then hang drying it on my fire escape/backyard fence. The CDC has official guidelines on washing cloth face coverings that I’m not properly following. According to the CDC, a reusable cloth mask (versus the blue surgical masks and N95s, which are disposable and should be saved for healthcare workers) are to be washed on the warmest appropriate setting in a washing machine, or hand-washed in a solution of bleach and water. The CDC also says a mask should be “washed after each use.” What constitutes a “use” isn’t defined, and so how often one should perform the chore of cleaning their mask(s) is a bit of a gray area.

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Source: Slashdot – How Often Is Everyone Washing Their Masks?