There are a lot of models of robotic vacuums available today, and they range in price from $50 all the way up to $1,800. These vacuuming robots are typically low-slung and compact, meaning they can get under furniture that a regular upright vacuum cleaner can't.
Most manufacturers will tell you that a robotic vacuum is meant to supplement a standard, human-pushed vacuum cleaner, not replace it. They're meant to perform daily or weekly touch-ups to keep your home cleaner in between regular vacuuming cycles. Still, if you're someone who never vacuums in the first place, a little robotic helper can certainly get your floor cleaner than it is right now, and you hardly have to lift a finger.
By far the most popular robotic vacuum in the United States is iRobot's Roomba, which comes in various models ranging from the base-model Roomba Red to the super high-tech Roomba Scheduler. HowStuffWorks has a Roomba Red ($150 MSRP) that we're going to try out and dissect for this article. Let's start by checking out what's under the hood.