The iRobot Roomba i7+ used a grid pattern to impressively navigate our floors and even maneuver over the dark carpet in the lab. The vacuum claims to have smart mapping technology that allows it ...

Not so with iRobot’s new Roomba i7+ ($950), which empties itself. While the device is powering up, a separate vacuum inside its base charger sucks the dirt and dust from the Roomba’s innards ...