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What Makes a Robot Vacuum Cleaner Best? The best robot vacuums come with a a powerful motor and a set of bristles or rollers that are tough. They also have large dustbins and a long battery life. Certain models map homes using smart mapping, and can pause to recharge, then clean up where they stopped. They can create zones that are not allowed to enter, and can identify different surfaces. Object Avoidance Object detection is a crucial feature for robot vacuums, since it allows them to avoid running into small items like socks, toys, cords or shoes that are not o