Home Robotics and the Mint Cleaner

I was involved with several projects in the enterprise that dealt about how cleaning products could be used in conjunction with home robotics.  We got some early experience with in-office robotics that moved mail around.  In particular which algorithms could be used to make that process efficient.  The best known example is the iRobot Roomba floor sweeper.  But a recent conversation reminded me of the mint floor cleaner.  Which has been advertised much on cable recently and received generally good reviews.  Waiting for the workable home butler.