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Although it moves on its own, the quirky, convenient robot vacuum still requires a certain level of maintenance. The unit's dust bins must be emptied from time to time and because of its close proximity to the floor, there is a possibility of sensors becoming clouded, interfering with the unit's ability to function properly. Households with pets will need to disassemble the unit to remove pet hair from the revolving brush.
Without clean sensors, a robotic vacuum will not be able to calculate the size of the room, its cleaning path or identify drop-offs, such as stairs. Use a soft paint brush to gently dab away dust from sensors and other delicate parts of the unit.