We were blown away by iRobot's Ava prototype at CES this year, but the company's consumer bread and butter is its line of cleaning robots. The floor-washing Scooba line is getting an update today with the new Scooba 390. The low-profile robot cleans in several different stages, first vacuuming up any detritus, and then spraying down cleaning solution and scrubbing your floor before wiping it clean with a built-in squeegee. The 390 features 30 percent longer battery life than the 380 model it replaces along with a new design for easier operation. The robot can cover 450 square feet per cleaning, and is even smart enough to avoid rugs, carpets, or the edges of stairs. The Scooba 390 retails for $499.99 and is available for order at iRobot's website; it will come to the UK this summer. iRobot also announced expanded international availability of the Scooba line as a whole, bringing both the new model and the entry-level Scooba 230 to Europe, the Middle East, Africa and Latin America starting this April, though no prices have yet been announced.