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Robot Vacuum Reviews Robot vacuums can reduce the frequency of cleaning however, they cannot replace plug-in models. To ensure they are in good shape clean the dust bins after every cleaning session. Clean the sensors and camera periodically. Replace filters and side brushes as required. It has a huge bin and an auto-empty that is quiet. But its obstacle avoidance still gets tangled up with cords and socks and it is unable to detect dirt that is close to baseboards. iRobot Roomba 694 The Roomba