I used to make my own dog shampoo when I had my lab. I started with either a liquid castile soap from the Dr. Bronner collection or NSP's Sunshine Concentrate. Then I would let her choose her aromatherapy essential oils. Since dogs have such a strong sense of smell, it makes sense they would be able to sense the oils that would work for them. Sometimes I edited the offerings for her to choose from based on the weather and their benefit. She seemed just as happy to indicate her choices by either nudging the bottle with her nose or turning away from it. Then I would add the drops according to recommended recipes and cap the bottle to mix thoroughly. Have you ever tried making your own dog shampoo? Did you make all the choices yourself or include your dog in the process?