I used Harts flea shampoo on my dog and that same day he started getting fluid filled bumps on his head and body. He immediately became lethargic. When I took him to the vet, the first thing he asked was if I had used a Hartz shampoo. The vet told me to seal the bottle in a bag and throw it away. That many dogs have died from those products. I was fortunate to have only used it once and my dog survived. But my boy friend’s dog did not. He began having seizures and bumps all over his body. When they took him to the vet, the vet recommended to put the dog to sleep. They had been using the shampoo for months. It’s so sad and frustrating that this shampoo is still on the market.