Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wondering if this does anything

Arrived quickly, but the first thing I had to do was scrape the bar code stickeroff the bottle because it completely covered the instructions. That was a pain.When finally revealed, the last statement in those instructions: "Brushing every third day enchances results." DUH! IF we all brushed our dog's teeth every 3 days, we wouldn't need a product like this, would we? So, I'll try this stuff; but......