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

One word: humbled. I consider myself a car buff and take pride in maintaining my car's looks and mechanical condition. I give any device that saves labor without cutting corners a fair shake. So when I thought I could shave a few minutes off my bi-weekly wash-dry-polish-wax routine, I wanted to give it a shot - after all the California duster worked great for me.But the dry blade was an utter disappointment. After several tries at all kinds of angles and varying amounts of pressure, all it did like another reviewer said, was "stick & jump & bump" all over my car's paint. It even left ugly white marks which I had to buff off.Sent it right back and am back to microfiber towels for drying.