Use of medicated shampoo. Off-the-shelf flea and tick shampoo can be used regularly to keep fleas off of dogs. Adams' Plus or Sentry shampoos are designed to provide and anti-flea coating to the dog's fur. As the fur and skin sheds, so will the shampoo and its protection. Unfortunately, most shampoos have a short life of effectiveness, ranging from two days to one week. Keep using as directed.
Use garlic in the dog's diet. Adding approximately 1/8 of garlic along with a raw egg yolk to a dog's diet has been known to ward off fleas. Use of garlic pills in a dog's food have also been considered effective.
Use a flea collar. Flea collars either generate a poison that is fatal to fleas or they secrete a chemical that is taken into the dog's upper skin layer. Either method will keep fleas off of the dog. The drawback is that the greatest area of protection is the head and neck and upper shoulders.