This Happy Jack Kennel Dip II for Dogs is a water-based, synergized concentrate insecticide with up to 30 days residual effects. It contains 17% Permethrin and 4.25% Piperonyl butoxide to kill fleas, ticks, and mites on dogs over 25 lb and 12 weeks of age and their premises. Excellent for treating minor skin diseases such as mange, summer eczema, hot spots, etc. Mix ½ oz per 1 gallon of water. 16 oz bottle.