- Ultraviolet rays destroy the DNA and RNA of microorganisms, making them lose their ability to reproduce and die, achieving the effect of disinfection. The sterilization rate is up to 99%.nn- It can disinfect personal daily necessities, clothing, tableware, telephones, desks, toilets, bedroom, public places, cars, etc.nn- After use, because the lamp killed a lot of bacteria in the room, please open the windows and doors, allow the room to ventilate 15 minutes then enter