Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not Buy

The McCulloch Chipper/shredder does not work. I could not keep it running more than about 20-seconds, when it then jammed-up on brush/branches 1/8th inch or less in diameter. I had to take the top-chute off over 10-times in the first 45 minutes, then I gave up. I was greatly disappointed. I had read both the positive and negative reviews, and decided to buy anyway. From now on I will purchase only after looking at the negative reviews. They appear to be more accurate. About the only positive thing I can say was that Amazon's return policy/procedures at UPS worked easily.