I had been looking for a robotic vacuum for a few years now. I'm disabled & just can't vacuum the house anymore. This machine is wonderful, I can't possibly say enough good things about it. It's even polite & thanks you for emptying the dust chamber. It's also entertaining my 89 year old mother & also the cat, get a big kick out of watching it working it's way around the room. This machine is easy on the furniture, no running into things to get direction. It's amazing how it scan's the room & sets up a pattern to vacuum. Greatest robotic vacuum I've seen yet. I am so glad I bought it.