The BISSELL Natural Sweep is designed to effectively clean your carpets and hard floors in between routine cleanings without using electricity. The sweeper has two brush rolls: one is specially designed for picking up large debris (cereal, beads, etc.), and one is designed for picking up fine particles (dirt and dust). In addition, the Natural Sweep has small brushes placed in the 4 corners of its foot. These help to capture dirt and debris along edges and in corners.