Instruct: Classify a review as either positive or negative.
Query: Great Kills Ticks and Fleas

Works great and is very effictive for my two cats. I find it last longer that a month. I do the second dose 30 days after the first, the third dose 40 days later and the forth and on dose 45 days later. Because it works for pleas and ticks I like it better than the other products.