Zodiac Double Action Flea & Tick Shampoo for Dogs & Cats For an existing infestation you want the quickest kill. Zodiac Shampoos (and pet sprays) work the fastest because they are applied directly to the entire coat and kill fleas and ticks on contact. KILLS Adult Fleas and Ticks KILLS cat fleas, dog fleas KILLS American dog ticks KILLS Brown Dog Ticks KILLS flea eggs for up to 4 weeks Innovative concentrated insecticidal shampoo enriched with oatmeal, coconut oil, lanolin and aloe. Enriched to condition and soothes sensitive skin. Leaves pet's coat soft, shining and manageable. Keeps flea eggs from hatching for 4 weeks. With Precor Insect Growth Regulator (IGR) which effectively breaks the flea life cycle and prevents the growth of the preadult stages of the flea. Apply once a month. Allow the lather to remain for 3-5 minutes. Rinse thoroughly to remove all traces of shampoo on the pet’s coat. To prevent pests from crawling inside your pet’s ears and nose begin application at the head. Once the hair is dry after shampooing, a topical or collar can be applied. Given the residual control afforded by Zodiac Double Action Flea and Tick Shampoo, the application of this product once a month should be adequate. In exceptional circumstances, where there is a heavy external source of adult fleas reinfesting the animal, re-treatment may be increased to once per week. DO NOT use this shampoo more often than once every week. DO NOT use solely as a shampoo when there is no pest problem. Treatment must be repeated only if the pest problem reoccurs. ALWAYS READ AND FOLLOW THE LABEL INSTRUCTIONS BEFORE USING OR APPLYING ANY PEST CONTROL PRODUCTS. Do not use on nursing animals or dogs or cats under 12 weeks of age.