Robotic vacuum cleaners are nothing new. We have seen a bunch of exciting ones in the past. DEEBOT M8 happens to be a robot with an integrated water tank for automatic wet cleaning of your rooms. The tank holds the microfiber cloth damp. The robot does not cause any mess and avoids obstacles.
As you can see in the above video, the robot is smart enough to go around your home and stay out of trouble. More information is available here.