This Groom Professional Dirty Dogs shampoo comes recommended by our in-store Grooming gurus, Dirty Dog Shampoo is an excellent deep cleaning shampoo with an economical dilution rate of 20:1. It easily cuts through grease and dirt to leave even the smelliest coats feeling soft and smelling fresh. Suitable for all breeds. How to use: Completely wet coat with lukewarm water, apply shampoo from neck to base of tail and gently work into coat, creating a lather. Carefully avoid eyes and ears, rinse thoroughly.