Natural Flea & Tick Shampoo with Oatmeal for Dogs combines natural botanical ingredients that work synergistically with one another to provide effective, natural and safe flea & tick protection. Natural Flea & Tick Shampoo with Oatmeal for Dogs has been proven to provide residual killing and repelling of fleas, tick, black flies and mosquitoes, for up to 7 days. It also contains oatmeal proteins that moisturize, nourish and revitalize dry coats. Natural Flea & Tick Shampoo with Oatmeal for Dogs does not contain Pyrethrums or similar chemicals. .