I had a Dyson and I loved it. I even posted about it in this thread. It is excellent in picking up pet hair and a great machine - however, it just wouldn't suck up the cat litter sufficiently. It improved a bit when I used it on the hard floor setting, but still didn't do the job completely. Finally got rid of it and went back to Hoover. It just became too much trouble to use one vacuum for the house and another vacuum for the room the cat box is in, and the hallway that always got the leftover litter from their paws.