The light doesn't need to kill 100% of pathogens to be effective at decreasing risk. I agree that if the pathogen is on a table but under a protective layer th

The light doesn't need to kill 100% of pathogens to be effective at decreasing risk. I agree that if the pathogen is on a table but under a protective layer the levels of UVC we're talking about aren't going to do anything to it. But the main concern is with airborne viruses which mostly aren't very protected.