"The ISS says that SARS-CoV-2 particles have been detected on the interior side of the mask as long as 4 days after a mask was worn, and up to 7 days on the exterior," continues the website, quoting a report from HuffPost Italy.
5 tablespoons (1/3rd cup) household bleach per gallon of room temperature water or.
Soak the face covering in the bleach solution for 5 minutes
Make sure to completely dry cloth face covering after washing