With 40x more Power-Lifting Suction, our legacy powerhouse cleaning system, and advanced technologies, clean thoroughly—even into corners and along edges. The s9+ empties itself into the Clean Base Automatic Dirt Disposal that holds months of debris. Its learning never stops, as it offers up personalized cleaning recommendations that work around your life, pollen seasons, and peak pet-shedding times—so that it’s always one step ahead of the mess. (Compared to the Roomba i Series robots)?.c