The other device that I tested was the ($250) designed and manufactured by . This is a very different design from the other products; it's essentially an intelligent, powered . It is a box with a pad on the front held in place by magnets. You detach the pad, wrap either of the provided microfiber or wet mop cloths or use an actual Swiffer cloth, place the pad back on the body, select a wet or dry cleaning program, and off it goes.

Along with the Mint comes a small box with some sexy blue LEDs that you place in the middle of your room. When the Mint starts it communicates with the box which, using a technology called , paints an invisible marker on the ceiling for location and navigation, enabling the Mint to travel in straight lines and learn the shape of its environment as well as return to its starting point at the end of the cleaning cycle.

In its wet mop mode the Mint executes a herring bone path, driving forwards and to the right, then rolling partially back and then forwards again to the left, a cycle it then repeats until it has to turn. The results on my floors are amazing! With just water on the mop cloth there's little streaking and the mop cloth shows just how filthy my dogs make the floor (again, seriously gross).

In dry sweep mode the Mint zips around in straight lines and in both modes it finishes its cleaning run with a remarkably accurate traverse around the room's perimeter.

So whats wrong with the Mint? First, its battery recharge time is 7 to 10 hours but its run time is only 2 to 3 hours. Second, there's a handle on the back end of the Mint that's in the wrong place. When you pick up the device, I would expect it to hang pad up so you could easily replace the cloth and or plug in the charger. With the handle where it is at the back, the pad is facing down. It may sound trivial but after you use the Mint for a while you realize this detail matters.