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What to Look For in a Robot Vacuum Depending on the budget you have You can purchase one with or without all the bells and whistles. Consider buying a model with self-emptying docks and one that can clean different types of flooring. Models that are priced lower typically use basic bump navigation systems that are slow and inefficient. Higher-end models use sensors to map your home and navigate around obstacles and furniture. Here are a few examples of Robot vacuums can save you