The iRobot Roomba from the 800 series is the ultimate high-performance vacuuming robot. The base model Roomba 866 features the revolutionary three-stage Aero Force cleaning system along with Aero Force extraction rollers, and it has been proven to remove up to 50% more dirt, dust, hair, and debris from all floor types—while requiring less maintenance. Vacuuming couldn't be easier than with the Roomba 866. Just press "Clean," and the Roomba takes care of the rest. It effortlessly navigates its way around obstacles, cleans under furniture, and effectively covers every area. It cleans each section multiple times and focuses on the spots that need it most. The Roomba 866 is ideal for households with pets and allergy sufferers, and it is practically maintenance-free. You don't even have to be home while it cleans. Just set the schedule, and you can go out and enjoy more pleasant activities. When you return, you'll find sparkling clean floors waiting for you. The three-stage Aero Force cleaning system uses patented extraction rollers to clean floors more effectively. Simply press the Clean button or schedule a cleaning for when you're not home. It vacuums autonomously thanks to iAdapt Responsive Navigation Technology.