Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Useless.

I had great hopes for this machine--at least my wife did when she purchsed it. We are avid gardeners who wanted to add substantial composting to our arsenal. This McCullough machine is not designed to mulch 1)large twigs 2) rose canes 3) ornamental grass stalks, 4) any garden waste that is not bone dry. It can shred dry, very dry, leaves. Honestly, that's about it. Another devoted gardening friend also regrets purchasing this machine. In her words, "it's good if for some inscrutable reason you want to chip chopsticks, one at a time." I wish I had the money back in our pocket and I'd put it towards a real chipper shredder which, alas, will cost many hundreds of dollars. This machine is worthless. Did I mention it frequently jams? If jamming was a step in creating compost, this machine would be a champ. Bottom line: frustrating waste of time, space and money. DO NOT BUY if you need more than chopped dry leaves.