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Robot Vacuum Reviews - How to Keep Your Robot Vacuum Clean Many robot vacuums connect to apps that let you control the device hands-free. These apps let you plan cleaning sessions, set boundaries and zones that are not allowed to enter. A few of the robots we tested can automatically return to their base and recharge during a cleaning session, which is useful for those who have a big house. Many also have a self-emptying dust bin and water tank to keep the robot in good order and reduce allergens in