The Roomba j7+ sticks to hardwood, tile, and low-pile carpet

The Roomba j7+ does its best work on the surfaces that make up most homes — hardwood, tile, and low-pile carpet — and avoids the wall-to-wall high-pile stuff that bogs down lesser robots. iRobot’s strength has always been obstacle detection and navigation smarts, not deep-pile suction power, so the j7+ knows its limits and stays in its lane.