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Controlling and Preventing Fleas in Dogs


New Methods of Flea Control continued...

Advantage kills fleas on direct contact and may reduce hatching eggs and larvae. Following application, 98 to 100 percent of adult fleas are killed within 12 hours. Thus, any new fleas that infest the dog should be killed before they have a chance to lay eggs. This breaks the flea life cycle and eventually eliminates fleas in the environment. Advantage is not absorbed into the dog’s system, and therefore is nontoxic. Humans do not absorb the chemical after petting a treated dog. Advantix is a new formulation that also acts against ticks.

One drawback of Advantage is that it loses some of its effectiveness if the dog’s coat becomes thoroughly wet more often than once a week. If this happens, the dog can be retreated as often as once a week.

  • Frontline and Frontline Spray contain the active ingredient fipronil,which kills fleas on contact within 24 to 48 hours. The fleas do not need to bite the dog to be killed. Frontline is a liquid that comes in tubes and is applied as described for Advantage. The effectiveness of Frontline is not diminished if the dog’s coat becomes wet. The product has a residual effect that lasts up to 90 days in some dogs. Like Advantage, Frontline is not absorbed and thus appears to be nontoxic. One additional benefit is that it also kills ticks for up to 30 days.
  • Frontline Plus has (S) methoprene, which is labeled to kill adult fleas, flea eggs, and larvae. It also treats chewing lice and is used as part of a program to control sarcoptic mange.
  • The heartworm preventive Revolution (selamectin) is a once-a-month liquid preparation applied to the skin of the dog’s neck between the shoulder blades, as described for Advantage. It also controls adult fleas and prevents flea eggs from hatching.

WebMD Veterinary Reference from "Dog Owner's Home Veterinary Handbook"

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