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What to Look For in a Robot Vacuum Based on your budget, you can get a robot vacuum with or without the bells and whistles. Look into buying with self-emptying docks and one that can clean various types of flooring. The models that are less expensive tend to use basic bump navigation systems that can be slow and inefficient. High-end models use sensors to map out your home and navigate around furniture and other obstacles. Features Robot vacuums can save you time when cleaning you