The built-in ultraviolet rays (UV-C) will effectively eliminate different bacteria, viruses, and moles moving along with the air particles. The UV-C light wavelength (between 100 and 280-nanometer wavelength) breaks apart germ DNA, leaving them unable to function normally. UV-C light is germicidal (which UV-A and UV-B light are not). When the microorganisms' DNA is damaged to a certain state and interferes with their reproduction system, they cannot make multiple as rapidly. This results in reducing unwanted odors from pets, smoking, cooking fumes, and killing airborne viruses such as influenza, staph, rhinovirus, and other airborne viruses when they come in contact with the UV-C light. For more information, please visit our website : http://apesto.com/product-category/uv...