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What to Look For in a Robot Vacuum Depending on your budget you can pick a vacuum that comes with all the bells, whistles and features. Choose a model that can clean a variety of floors. You may also think about buying one with a self-emptying dock. Models that are priced lower often have basic bump systems which are slow and inefficient. High-end models use sensors to map out your home and navigate around furniture and other obstacles. Features Robot vacuums c