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What to Look For in a Robot Vacuum Based on your budget, you can select a robot vacuum with all the bells, whistles, and features. Find one that is able to clean a variety of floors. You may also look into buying one that has a self-empty dock. Lower-priced models often have rudimentary bump systems which are slow and inefficient. High-end models utilize sensors to map your home and navigate around obstacles and furniture. Here are a few example