Let's be clear: this gadget because it is one, absolutely not replace conventional household vacuum or broom, whether simple or mechanical. The most that can be done to gain some time for the last little while we sweep done something else, before the arrival of guests, for example. But the prerequisites prove still quite restrictive: - Hard floor only (no carpet in the room otherwise it gets stuck) - No drop even lower (otherwise it gets stuck) - We must delineate the space to scan if there is no doors (loft character or huge open main space) on pain of seeing stroll for 2 hours without efficiency - The least possible obstacles (it is best to remove the chairs around a table, otherwise yo-yo incessant and inefficient) - Must give him time, as more cycle will be long and it will eventually go (almost) everywhere; knowing that it will take a good hour to do what we do in 15 minutes - The kind Swiffer cloths clinging below will properly used once (the bill "accessories" can rise very quickly) - And above all, it will only be effective on the ground ... already own! I mean by this that can replace a small daily sweep crumbs and surface dust. If you usually do the household vacuuming 1 or 2 times a week, keep your aspi! This ViRobi will do almost useless. For obsessive (le) s cleaning however, provided that your floors are suitable, this device could possibly save you some time, allowing you to do something else for a few minutes.