There is a carpet in the bedroom of my grandchildren that I spent hours trying to clean with various techniques (vacuum, special brush, carpet tape to stick the cat hair and other dirt) never getting a good result. So I tested the Dirt Devil Post on this carpet. In two minutes it was as clean as it leaves the store. This almost magical result is due to the power of this vacuum, a power that can change with ease and precision thanks to a sliding button on top of the unit. Also thanks to the ability to easily adjust the height of the handle, which avoids having back pain. Also thanks to a special brush carpet extremely effective, not the kind where dirt remains stuck brush aspire to do next with the pipe but the kind that really sucks and immediately. Other benefits of this vacuum cleaner accessories are: a round, rotating brush for delicate cleaning (dusty knickknacks, computer keyboard), a small special brush for car seats, armchairs or sofas, and finally a thin beak for the grooves. The weight of this vacuum cleaner is not excessive, the wire is long enough to not have to use two different takes in a large room, and finally, "last but not least" it is not too noisy. Still, the dust bag seemed certainly improved but little. It is recommended to change it up every three months, but I imagine that it will be completed well before that. The notice gives the recommendation is, moreover, clear I can only recommend very strongly the Dirt Devil!