Flea Aways repellent is a vitamin complex, specifically formulated for dogs and cats. Flavored with real liver your pet will love them! When Flea Away is kept in your pet's system, the vitamins will cause your pet to develop a natural repellent for fleas, ticks, and mosquitoes. They simply stay away from your pet because of the odor (undetected by humans), that your pet's skin gives off. With Flea Away the dog or cat's skin has a natural smell caused by the special safe mixture of vitamins that you and I cannot smell, but fleas do. Flea Away is liver flavored so you can give Flea Aways chewable tablets to your dog or cat as treats or place them into their food.