Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Most wonderful invention!

My husband got this for me for Christmas and it's fantastic! It really picks up the kitty hair too! We have 6 kitties & I have to have a clean house. The Roomba has made it so much easier for me. It does everything it's suppose to. I couldn't believe when it returned to it's charging base all by itself. You do have to make sure there are any small obstacles that can get caught in the vacuum. We've sucked up some kitty toys by accident. Make sure your rugs don't have fringes or tassles. When it finds an area (under couch or tables) that needs extra cleaning, it concentrates on that area then continues on. It works on both carpet & tile floors with no problem. It doesn't damage your furniture either. We even put a little weather stripping on the front of the vacuum to ease the bumping. It's a great vacuum & every house should have one of these!