Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DO NOT BUY THIS!

Unfortunately, I didn't pay attention to the Amazon reviews before buying and I paid the price. The Bioaire worked fine for exactly one month and then it died. I called Bionaire and they told me to reset it by unplugging the machine for 15 minutes and then plugging it back in. That worked for two days, then it died completely. I cannot believe Bionaire continues to sell a machine that CLEARLY has serious motor issues. In any case, I'm returning it to Amazon and getting a refund. What a waste.