I bought this article there are 4 years I use it extensively and it never broke down; it sucks less thoroughly than a conventional vacuum cleaner, but that's enough for me to leave the advantages vacuuming work alone, passing under furniture (to a certain height under furniture) are disproportionate with the fleeting satisfaction of a perfect vacuum; However, although it must clear areas sucking before letting the beast; Also: regular cleaning as explained in the site Roomba is also necessary to keep the vacuum cleaner in good working order