My place has 3 things to test a vacuum with!! Kids, Dogs & dirt. Didn't know how bad the other vacuum (Shark) was doing until Wind Tunnel 3 step thru the front door. After the 1st time, vacuumed 2 more. The 3rd time was not needed. My wife insisted on carpet cleaning now. Did not come up with near the dirt as usual, just to say how well Wind Tunnel 3 did. By the way, I had such good luck with the Hover Wind Tunnel 3, I bought the Hover carpet cleaner Power Scrub Elite, also a very good machine. Beat up Rug Dr. rental.