Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Waterpik Pleaser

Received the Waterpik Ulta Dental-opened the box, spent 3-4 minutes ( or less )on the instructions, set it up in about a minute-and Voila----it worked perfectly. Couldn't have been easier.Minor drawback. The reservoir could have held a bit more water for my taste, but it is not very meaningful at all.