The iRobot Roomba Combo j7+ is the first floor-cleaning robot with a fully retractable mop. When it detects carpet, the robot automatically lifts its mopping plate out of the way, rests it on top ...

If you can live without the fancy self-cleaning dock that deals with soggy mopping pads for you as long as your robot mop actually scrubs the floor well, then consider the Shark Matrix Plus 2-in-1.