Get pesky fleas and ticks under control fast with Veterinary Formula Flea and Tick Spray for Dogs. This convenient spray works to kill fleas and ticks at all stages. The specialized formula features pyrethrins, an extract of the chrysanthemum flower, which kills fleas and ticks on contact. Permethrin offers long-term control of fleas, while nylar inhibits the development of immature stages of the fleas for up to 100 days, preventing them from reaching the adult stage. Spray it directly on your dog, or use it to treat the areas where your dog spends time in your home. It’s easy to use, and just one application provides up to two weeks of support.