Seresto, Flea & Tick Dog Collar, Large

With its innovative delivery system, the Seresto 8 Month Flea & TickCollar for Large Dogs offers a breakthrough in tick and flea control for yourprecious pup. This treatment is specifically formulated to repel and kill fleasand ticks on contact with no painful biting required. Inside the unique polymermatrix of this easy-to-use, non-greasy, odorless collar are two activeingredients: imidacloprid (10%) to control flea infestations, and flumethrin(4.5%) to repel and kill ticks, larvae and nymphs. These ingredients worktogether to provide dual-action protection against parasitic pests for up toeight months!