This little UV light system did a fantastic job of cleaning all areas of my home after a visitor infected us with Covid19. It had to be used separately door by door in each zone. But the room definitely smelled clean - almost TOO clean - when the device worked and I waited another hour before opening the door to the room. I went inside, opened an outside window, took the UV unit out of the room and let the room "breathe" fresh air for another hour. This process was repeated for each one-door zone. For large open spaces I followed the directions and removed the plants etc as instructed, left the unit on for an hour then left the house and came back a few hours later. When I came back, I opened the outside windows and left the site (it's winter and cold here) for another hour. UV light device. I would highly recommend this device to others who want to make sure their living quarters are clean after someone has fallen ill. Whether it's a bad cold, the flu, Covid or any other contagious infection.
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