KleanCarpets use the DryMaster system, superior to other cleaning methods due to the DryMaster "dirt extraction" system which clearly out performs other carpet cleaning methods. All other carpet cleaning systems leave a sticky residue in carpet fibers after cleaning. This residue clings to the fibers an attracts new dirt - much like a magnet. DryMaster's exclusive detergents leave 0% residue and inhibits re-soiling leaving carpets Cleaner & Brighter for a much longer time.