I bought this about 3 weeks ago. We only have carpet upstairs. The main level is hardwood. When we first got it I thought it might fall down the stairs and break. But fortunately it is smarter than that. We have 2 dogs and I usually have hair on my clothes black clothes before I go to work, but the last week or 2 I've noticed barley any hair on my pants. It's hard to keep up with 2 shedding dogs, but with this I don't wish I could vaccuum everyday... It does it for me. The only issue I have is it going in the little alcove to our bathroom. It kind of gets stuck in there until it figures its way out. I let it go one time and it took almost 2 hours to get out. It is a ackward space to take some blame off the robot though. But I'm going to try and see if it can bypass that. Other than that, I have no complaints. I would recommend this if you have a busy life, pets, and limited free time.