🐶 Keep your pup pest-free and happy! Topical treatment that’s simple and mess-free. Veterinarian recommended for ultimate protection. Provides continuous protection for 30 days. Starts killing fleas within 12 hours of application. Eliminates pests before they bite your furry friend. 6 applications 12-hour action 30-day protection Bayer K9 Advantix II is a veterinarian-recommended topical treatment designed for extra-large dogs over 55 lbs, providing six months of powerful flea, tick, and mosquito prevention. Its unique formula kills pests on contact, ensuring your dog stays protected without the need for bites.