iRobot has just announced the release of their newest robotic wet vac, the Scooba 390. Nothing better than having a robot scrub and mop your floors while you do something a bit more fun. The big changes for the Scooba 390 are the sleeker design and a battery that lasts 30 percent longer. The Scooba 390 uses a four step cleaning process that starts with prepping, then washing, then scrubbing, and finally squeegeeing your hard floors. Expect to see the iRobot Scooba 390 very soon for a whopping $499.