Smart Steam Technology kills 99.9-percent of common household germs, bacteria and dust mites * Uses only water, no chemicals-so it"s safe for children and pets * Variable steam settings allow you to select the perfect setting depending on the mess and surface * Bring back luster and sheen to aged hardwood floors or dull marble with the included buffing pads * Scrub brushes are great for outdoor use on decks, patios and walk-ways, Microfiber pads great for laminate, hardwood, tile and vinyl