Earth Animal Flea & Tick Program Yeast-Free Herbal Internal Powder Dog & Cat Supplement, 8 OzEarth Animal started with a dog named Leigh, who had been crippled by hip dysplasia. After developing natural alternative therapies, Leigh was able to walk and run again, leading her owners to develop a variety of all-natural products since 1979. Earth Animal's organic herbal remedies are wild crafted plant extracts that have been carefully selected to naturally assist your pet in battling common ailments. Eliminate fleas and ticks from the inside out without harsh chemicals. Simply add this to your dog's daily diet, which will change the odor of your pet's blood so that pesky biters will not be attracted. While the odor is not detectable by humans, Earth Animal's flea and tick remedy has more than 20 years' worth of proven testimonials.