What is the best dog shampoo for fleas and ticks?

There is no "best" but there are effective ways to remove fleas on dogs. One is bathing him in dog shampoo and a dish soap. Frontline is good but please note that you should not use it indefinitely because it can make your pet sick. Now that the fleas are gone, there are still chances that fleas will return. It's because there are still "FLEA EGGS" lying around the house. They often fall off on your dog and find their way back into your pet.