Based on industrial-style cleaners, iRobot’s new Scooba 450 uses a “new Scooba three-cycle cleaning Process” to maintain constantly clean floors and wash away up to 99.3% of bacteria. The upgraded device—which iRobot contends is up to three times more effective at cleaning floors than previous Scooba models—is on display today at the Consumer Electronics Show in Las Vegas. Scooba 450, “raises the bar for cleaning efficacy, our consumers' top priority,” said Christian Cerda, senior v...