WAHL Flea & Tick Dog Shampoois made with rosemary, mint and cedar oil to naturally repel fleas and ticks for up to 1 week without the use of toxic chemicals. Natural plant-derived ingredients make Wahl's Shampoo the choice for owners who want to avoid harsh chemicals for both their dog and themselves. Wahl's Flea and Tick Shampoo will leave your dog's coat clean & refreshed without the use of harsh detergents or ingredients not approved for human use. It is pH balanced, Paraben & Alcohol free.