Hartz Groomer's Best Clean Fresh Scent Shed Control Shampoo For Dogs. Reduces shedding with omega fatty acids. 15 fl oz 444ml. Hartz Groomer's Best shed control shampoo for dogs is enriched with omega fatty acids to help reduce shedding. Infused with Vitamin E to leave pet's coat conditioned, lustrous, and healthy. www.hartz.com. Hartz and other trademarks are trademarks of The Hartz Mountain Corporation.