I beg to differ with this review. My dog had a grand mal seizure 10 minutes after bathing him with this product. I didn't know it was the cause and then a week later bathed him again and after he seized again we realized the correlation between the product and this problems. He is only 2 years old and I have been thru hell because of this. I do not trust Hartz and wouldn't advise anyone to use their products. Our friend at the dog park used a vitamin from them and their dog had welts from it. The vet dermatologist they saw confirmed that no one should use Hartz. Why would a company do this to animals? Google them, they have harmed and killed thousands of dogs and cats.