We are cleaning this beautiful marble countertop for a customer in Madison today. First we scrub the surface with a stone cleaner then we rinse and extract the soiled solution with this extraction tool. Finally we apply a stone sealer to protect the surface from future damage. Natural stone is porous and can be permanently stained if it is not sealed periodically. The sealer does not change the appearance of the stone but it sinks into the pores and helps protect against future staining. For more information and cleaning tips visit absolutebestcleaner.com or call us at 203-927-6475.