If your requirement is for a manual push sweeper with superior fine dust control capabilities, a Karcher KM 70/20 C is the ideal choice. When sweeping, the main broom rotation causes a windmill suction effect pulling in fine dust, then exhausting the air through a large capacity synthetic filter which traps the particles. This rugged sweeper is constructed of corrosion-free, impact resistant plastics, designed to last for years. For outstanding sweeping performance the main and side brooms are water-resistant long wearing polypropylene, and fully adjustable.