I purchased this vacuum 2 years ago hoping it would solve my yellow lab dog hair problem. I was horribly wrong. Initially, the flat attachment broke at the elbow joint while using on the stairs. Dyson replaced it only to have it happen again within months. Very cheap plastic design.Forget the dog hair. My old Hoover Windtunnel picks up the dog hair on one pass. The Dyson takes multiple slow passes. Don't bother with edge cleaning. It won't happen unless you use the attachments.It's far too large to vacuum under anything like the kitchen cabinets, coffee table or get close to the edge of the couch.I have experienced a lot of dust build up on the inside of the tunnel portion of the machine. I had to take the entire thing apart this summer and use another vacuum just to get all the built up dirt off the machine.For $500 I could have two Hoover Windtunnels that actually work. This machine is going off to the dump!