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How to apply frontline
Buy the correct type of frontline.
You can purchase frontline at a pet store or your vet's office. You also may be able to get frontline at some drug stores, like walgreens.
It's a good idea to buy frontline from a vet, however, as a veterinarian can a make sure you get the right product. Frontline makes flea and tick treatments for dogs as well as cats.