iRobot Mint® 4200
The robot vacuum has a new cousin—it’s a wet mop and a duster. And, yes, a robot, too! Set on Sweep, it moves back and forth in neat lines, catching dust and dander. In Mop mode, it uses its own wet cleaning cloths (or disposable cloths from most big-name brands) to make floors shiny and fresh. Flat and small enough to zip under furniture and into tight spaces (measuring only 3.1 inches high), it uses GPS-like technology to map its path and built-in sensors to avoid stairs and area rugs. When it’s all done, it returns to its starting spot. And it’s super-quiet, so it won’t terrify the cat.
To buy: $200, irobot.com.