What is the best flea shampoo for dogs?

Based on both expert and user reviews, De Flea Pet Shampoo is the most effective flea and tick shampoo for dogs. A second highly recommended shampoo for dogs is Vet's Best Anti-Flea Easy Spray Shampoo.

The superiority of both shampoos lies in their lack of toxicity due to the absence of pyrethrin-based pesticides. This makes them safer for dogs as well as humans without sacrificing their flea killing effectiveness.

For Vet's Best, the two complaints from users that come up repeatedly are the lack of lather the product creates when applied to the dog and its higher cost. However, both brands meet the most important requirement for flea shampoo: they kill fleas rather than simply flushing them away.