Betco Corp.’s Stealth Cylindrical Sweeping Scrubbers improve efficiency and reduce labor by eliminating the need to dust-mop a floor before scrubbing. The dual brush technology allows the Stealth machines to sweep debris off the floor while scrubbing. Operating at 58 decibels, they are the quietest floor-scrubbing machines on the market, according to the company. Ideal for grouted tile and other textured surfaces. Two models are available: the 20-inch ASC20BT and the 24-inch ASC24BT.