Okay, so it’s robot vacuum day on Shelterrific! The table-top robot butler got us thinking about the Roomba. Even though they’ve made a splash (or vroom, if you will) on the domestic landscape, I donâ€™t actually know of anyone who uses one. iRobot not only has the Roomba to vacuum your floors but they also make a Scooba to wash them, a Dirt Dog to sweep your garage, a Verro to clean your pool, and a Looj to clean your gutters. Do you have your own household cleaning robot? How well does it work? And, more importantly, how long before they become sentient and try to take over the world from their human masters? — Katie D.