Unique agitators remove trapped dirt and contaminants from the bristles and keep them at the bottom of the tray Designed for use with synthetic bristle brushes Simply add a small amount of water along with a few drops of an all-purpose cleaner and agitate. Rinse brush and tray under running water and let air dry. DETAIL FACTORY - Our mission is to create the highest quality professional-grade auto detailing and cleaning equipment on the market. Our products are designed, patented, built & shipped in the USA.