Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lots of duds!

About 1/4 of the glowsticks did not glow, or would only glow in a couple splotches! I was using them properly... I made sure on the ones that weren't glowing completely that they were cracked all the way up the tube, and I shook them vigorously to make sure the fluid was moved around. Some of the other sticks glowed completely upon starting, but within 1 hour were only lit in splotches.None the less, they were fun, and cheap.