To understand how any cleaning product works we must first understand what dirt is or rather comprised of. Dirt is actually layers of fine films made up of grease, oils, fats, bacteria, germs, dust mites, non-organic material and organic micro-organisms. These films are bonded to each other and to the surface by amino and fatty acids. Most cleaners emulsify some of these films but do not break down all the amino or fatty acids. Usually the visible layers of the films can be removed with general cleaning products giving the appearance of a clean surface. Quite often the organicmicro-organism remain to collect and feed bacteria and germs. These areas often re-soil quicker and are the main cause of odor problems.