PureAire Essences contain essential oils. Made from botanical extracts and contain Vital Oxide disinfectant which has antibacterial and anti fungal properties. They are non-toxic, non-flammable, alcohol free, biodegradable & environmentally safe. How Vital Oxide works? Vital Oxide is EPA registered hospital disinfectant cleaner, mold killer, and super effective odor eliminator. Non-irritating to the skin, and non-corrosive to treated articles. Vital Oxide is certified by NSF International – The Public Health and Safety Company and kills 99.999% of bacteria, including e Coli, Salmonella and Listeria. Proven effective against Methicillin-resistant Staphylococcus aureus (MRSA), Norovirus, Legionella pneumophilia,E.