Research has shown that by diffusing a cool mist  of  therapeutic-grade essential oils, bacteria and viruses are killed on contact. The oil is vaporized into a micro fine  mist maintaining the oils natural compounds to destroy the life-threatening viruses and bacteria. Research published in 2009 “Letters to Applied Microbiology ” noted diffusing a simple blend of lemongrass and geranium essential oils resulted in an 89% reduction in the airborne bacteria count in the normal office environment. The essential oil vapors will also inhibit the growth of bacteria on surfaces.