We know, it may seem a little bit strange that these units are able to clean without using any type of cleaning solution or soap. Homeowners typically feel that the only way to get something clean is to employ some type of soap, but that just isn’t the case. These products are able to not only get surfaces clean from spills and mud that has been tracked in on shoes, but it kills up to 99.9 percent of bacteria including E.Coli, and other microorganisms as well as mold and viruses. Keep in mind, however, that not all products are created equal. In order to kill off these types of evildoers, the temperature of the water must reach at least 175 degrees.