Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do yourself a favor and shop around

The Ionic Pro Turbo worked great for about a week. I don't have pets or an excessively dusty house. I followed the directions to the letter, but it continued to make the buzzing sound even after being cleaned. Now it won't work at all. I've had it about 2 months. I've cleaned it several times (not that there is anything to clean) and now as soon as I turn it on it immediately tells me to clean it. It's not in a large room either. I am extremely disappointed in this item and would not recommend to anyone. I read in one review that they had luck with top loading purifiers, but I won't buy from this maker again.