Seems… Unnecessarily complicated: > Copper and its alloys (brasses, bronzes, cupronickel, copper-nickel-zinc, and others) are natural antimicrobial materials.

Seems… Unnecessarily complicated: > Copper and its alloys (brasses, bronzes, cupronickel, copper-nickel-zinc, and others) are natural antimicrobial materials. > After incubation for one hour on copper, active influenza A virus particles were reduced by 75%. After six hours, the particles were reduced on copper by 99.999%. Influenza A virus was found to survive in large numbers on stainless steel. > In a recent study, 75% of adenovirus particles were inactivated on copper (C11000) within one hour. Within six hours, 99.999% of the adenovirus particles were inactivated. Within six hours, 50% of the infectious adenovirus particles survived on stainless steel. https://en.wikipedia.org/wiki/Antimicrobial_properties_of_copper https://en.wikipedia.org/wiki/Antimicrobial_properties_of_co... Though I guess it's probably faster if it physically punctures the virus, and two hours is still a significant amount of time for infection to occur with a regularly shared surface. Salt has a similarly fast effect on viruses: > Whitlock found that salt killed off the bug 20 to 30 times faster than the copper did, reducing MRSA levels by 85 percent after 20 seconds, and by 94 percent after a minute. https://www.theatlantic.com/health/archive/2017/03/salt-vs-superbugs/518427/ https://www.theatlantic.com/health/archive/2017/03/salt-vs-s... Other than osmosis dessicating the virus, when the moisture dissolves the salt and then dries in a minute or two, the salt crystals physically puncture the virus's envelope, IIRC. https://www.ualberta.ca/folio/2020/10/u-of-a-researcher-working-on-salt-coated-masks-that-can-kill-coronavirus.html https://www.ualberta.ca/folio/2020/10/u-of-a-researcher-work... Though having a water-soluble and electrolytic desiccant covering everything obviously raises its own problems, and having tried this at the very start of the pandemic, I can say you really don't want to be breathing in salt dust all day.