I was the owner of a 4yr old fully trained service dog named Casey. He was trained for onset diabetes and could detect 8 different fatal viruses. Among the other approximately 180 different commands. He was worth about $15,000! But to me he was pa priceless lifesaver and best pal! I bathed him once a month in Hartz flea and tick shampoo. He was diagnosed with cancer and I had to put him to sleep to end his struggling and suffering. Hartz IS the only product I used. Please use caution along with common sense if you decide to continue using this product!