A Heavy-Duty Walk-Behind Sweeper is designed to clean most any indoor and outdoor hard surface (e.g., floor, pavement, mat, even gravel path). Depending on make/model, it generally consists of: (1) an under-deck 24- up to 40-inch-wide roller brush; (2) rotary-type side brush to get the debris that accumulates along walls; (3) large dust/debris hopper; (4) adjustable handle for operator comfort; and (5) rechargeable battery-operated motor that powers the brushes. Some types have water sprinklers for dust suppression and are self-propelled.