Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great!

No more allergic reaction to my friends cat after using this air cleaner! Surprised the heck out of me but it beats my Ionic Breeze by a mile at a fraction of the cost. Allergy season is upon us so I'm ordering another one tomorrow along with some extra filters. It's just great finding an inexpensive solution to a miserable affliction!