Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Jar pop works only on pry up lids

I suppose the name of the item should have alerted us that this device works only on "pry up" type lids. Unfortunately we wanted it to help with screw tops. On arrival, we discovered we don't have a single pry top lid in the house! A mention in the description that it doesn't work on screw lids would have reinforced the name.