Robot vacuums can frequently map a floor of your home to clean without much fuss. But if you aren't living in an apartment or bungalow, you probably have multiple floors -- where's the robovac for that? Neato thinks it can oblige. It's releasing a software update to the Botvac D7 Connected that lets its automated cleaner create maps for up to three floors. You'll still have to haul the robot up and down the stairs, but that beats buying another model just to avoid breaking out conventional cleaning tools. Neato is selling stand-alone charging stations (currently $40 each) to save you from moving the power source every time.