Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for carpet but, definitely useless on barefloor

We have both carpet and bare-floor in our house. Its not reasonable to buy two vacuums. The vacuum cleaner was supposed to be good for both type.Its decent on carpet (I think many vacuums are good, nothing special here). However, its really bad on bare-floor like wood, pergo, marble, tile etc. Anything heavier than a short strand of hair doesn't get sucked. I just lays there even if you vacuum it several times.Thinking of getting a really good vacuum for bare-floor. Anybody have any suggestions?