I had a discussion with my vet this week on insect treatment for my dogs. The discussion centered on fleas, but ticks came up. He does not recommend Frontline anymore. If I remember correctly, he said that Frontline was not effective on ticks and recommended a collar for ticks. There are chewables that are more effective on fleas and combinations that treat for fleas and heartworm that are more economical then individual treatments. I have one dog that is allergic to fleas, so I have to treat both of them.