Because I am a hermit essentially, I only use a mask once or twice a week. Will use one tonight. 6"-12" of snow tomorrow. So will be buying milk and eggs.
I have two types. Will be using the black kn95 mask at the local market. I also have the kf94 masks that have only 3 of the filter layers. I use those in Warehouse stores where I have to walk quite a bit. Easier to breathe through.
@webuiltthiscity the particles accumulate and stick to the filter material over time. They aren't going to all fall off into your mouth if that is ...
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@TheOldGuy I now use an ENVO mask. Good seal. Can use the exhalation valve for easier breathing in situations where no one else is masking up. And plug that for clinics, etc, where masks are actually required. Gel edge gives good seal (but probably not for beards0. https://envomask.com/
@Gaythia couldn't get the website. Undergoing maintenance.