I found information on that, but not specifically for masks. In the barn or sheds, I put on a respirator, spray everything with bleach water, let sit and clean. But masks will degrade if sprayed like that.
It appears it can be killed up in sunlight, but we have so much pollen, I’m not sure that is a good idea, unless I put them in ziplocks out in the sun. Or, I could try the oven, 30 min @160 like they are recommending for covid-19, but that would take days.
I wish I had one of those hydrogen peroxide vaporizers likes they are using in hospitals now to sterilize masks.I have a floor steamer, what if I put hydrogen peroxide in there instead of water?
You could try ozone.
Put them loosely in a big 3 mil garbage bag and put an ozone generator at the open end and then use big rubber bands to seal the bag around the generator and let it pump ozone in the bag for an hour or two. I doubt if anything will survive, but I am not an expert.
https://www.amazon.com/gp/product/B00DNHUZ0M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
What about a gallon size mason jar, out in the sun?
Would that generate the heat, and allow the UVs in, to effectively sanitize?
Pinging PAE, who may have the answer.
I found the following below. Hantavirus sounds similar to CV-19. Hang the masks in a room at room temperature for three to four days. You don’t have to clean all 200 at once either.
https://healthfully.com/long-can-hantaviruses-survive-environment-8716047.html
“How long hantavirus can remain in the environment is dependent on factors such as temperature, humidity and other environmental conditions. Even what the rodents eat could affect how long the hantavirus can remain alive in excretions. According to the Washington State Department of Health, in an average room temperature environment, hantavirus can live for about two to three days. Exposure to sunlight shortens the lifespan of this virus, but freezing temperatures can actually extend the lifespan. It’s best to err on the side of caution and treat all wild rodent waste areas as if they are infectious. “