The Germ Guardian UV-C room air sanitizer kills, as simple as that … but only the airborne germs. With ultraviolet germicidal irradiation technology which uses naturally occurring UV light, this room air sanitizer manages to kill 99.9% of airborne germs without the use of chemicals, according to tests performed by the Harvard School of Public Health and independent third-party laboratory testing. The UV-C light is the same technology hospitals use to sanitize. UV-C penetrates the outer structure of the cell and alters the DNA molecule, preventing replication and causing cell death. The sanitizer gets rid off Influenza-A, Staphylococcus, Streptococcus, Tuberculosis and others, in addition to eliminating odors from smoke, cooking, mildew and pets. It also destroys airborne mold spores and other allergens. The special UV-C bulb that Germ Guardian room air sanitizers use, does not produce ozone. Available in six colors to fit your decor, these air sanitizers cost $200, while replacement bulbs are available for $30.