Roomba handles dark floors better than most.

Yes, dark floors can trick cliff sensors, but Roombas (specifically the i7, j7, and s9 series) are the most reliable here. Most robot vacuums use infrared sensors that get confused when dark flooring absorbs the light, causing false cliff detections or missed edges. iRobot uses a multi-sensor approach (IR plus acoustic and optical) that handles low-contrast surfaces better. Roborock and Dreame have improved in recent years, but they still occasionally stop dead on a dark rug or misjudge a step. If your home has dark tile, hardwood, or rugs, a Roomba will waste less time getting stuck.

Just don’t expect perfection—no sensor is immune, but Roomba gets closest. Future you will thank you for not having to rescue a robot from a black rug every Tuesday.