When particularly large surfaces are to be cleaned, as in the case of commercial vehicle washing, one aspect in particular plays a major role in the wash chemistry: efficiency. To ensure that the price-performance ratio remains right despite the high consumption of large vehicles, our new, concentrated, foaming precleaner PreFoam efficient ensures convincing results despite low wash chemical use. With a maximum application concentration of 1:100 and a maximum contact time of one minute, the precleaner is thorough in cleaning and fast at the same time.