Wahl Premium pet care products present to you the best shampoos available in the market for your little friend. what's the best shampoo for smelly dogs ? One answer: wahl odor control shampoo. Wahl Shed Control Shampoo helps to reduce shedding and dander, while leaving the coat clean and refreshed. Wahl Oatmeal Shampoo contains oatmeal, coconut, lime, aloe and lemon verbena to soothe dry, itching, irritated skin.