Flea Treatment For Puppies 6 Weeks Old. After bathing make sure to dry them thoroughly. At the age of 6 weeks, puppies can start receiving the prescription topical flea preventive revolution, containing selamectin.

The safest way to treat a puppy under 6 weeks of age for fleas is to bathe him using warm water and dawn dishwashing detergent and then to manually pick off remaining fleas. I use johnsons 4fleas tablets on our pups as they can be used from either 4 or 6 weeks would have a deffinate age for you but i have thrown the box away. No flea treatments for 6 week old puppies please.