Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works for me (and my dogs)

We live in eastern Washington state, and in the middle of a forest, so tick season runs from about April through July. (We pretty much don't have any fleas here.) I have used this product now for 4 years on my dogs, and never a tick (but prior to using it, my dogs had quite a few ticks on them). So IT WORKS! It's easy to apply, and does not appear to have any adverse affects on the dogs (unlike Biospot, which I tried before switching to Frontline - Biospot made my dog violently sick). Yes, a bit pricey, but compared to the cost of vet bills it's cheap (one vet visit would buy a year's supply of Frontline for one of my dogs).