Microban® protection is built-in to the product during the manufacturing process. When microbes come in contact with the product surface, Microban protection penetrates the cell wall of the microorganism and disrupts cell functions making the microorganism unable to function, grow and reproduce. Microban has been included in the hose, bladder and tank of the BISSELL ProHeat 2X Select 9300 series, 9400 series, 9600, and ProHeat 2X Healthy Home machines.