UVC will not however, penetrate through paper, walls, bedding, and most glass. UVC only kills where the light can directly reach. Once an area has been treated, UVC will not kill new pathogens introduced after treatment. You will need to go over the area again.
Scientists have long known that UVC Light has a broad spectrum wavelength of between 200 and 280 nanometers. This is very effective for sterilizing viruses and pathogens by breaking down their molecular structure that keeps their DNA together.
UVC disinfection is used by Hospitals, Restaurants, Bars, Hotels, Dental Offices, Medical Clinics, and more. UVC Light is very effective in helping to sterilize kitchens, doorways and knobs, lobbys, bathrooms, reception areas, stairwell handrails, virtually any surface exposed to touching.
UVC is very harmful to humans and pets. Never operate any UVC device around people or pets. UVC will also kill plants and fish, as well as degrade plastics and rubber over time with heavy use.
ALWAYS wear UVC protective eye wear, long sleeves and gloves while operating any UVC device.