WYSI WASH SYSTEM. Hypochlorous acid is effective against the most dangerous pathogens including bacteria, viruses, fungi (such as ringworm) and protozoa, none of which have become resistant to hypochlorous acid. The Wysiwash Sanitizing System eliminates: Canine Parvovirus, Corona Virus, HIV Virus, Hepatitis Virus, Salmonella, Tuberculosis, Distemper, Rabies, Candida, Listeria, Avian Influenza, MRSA, Staphylococcus, Streptococcus, Pseudorabies, Swine Parvovirus, E. Coli, Campylobacter, and Norovirus.