Hypochlorous acid in naturally produced by human body. When our body gets infected by bacteria and other pathogens, immune system reacts immediately by sending leukocytes to infected areas. Leukocytes initiate production of hypochlorous acid by means of nerve impulses. Hypochlorous acid is in fact a biocide naturally produced in human and animal bodies. It is harmless to humans, animals and the environment. It is entirely biodegradable and hypoallergenic. It is more and more frequently used in the US, Australia and Canada to disinfect water used to feed poultry which eliminates application of antibiotics and other drugs.