Virbac Knock Out Spray with Nylar (insect growth regulator) kills fleas for 2 months and kills ticks (including Lyme Vectors) for 1 month. Nylar IGR sterilizes fleas for 3 months.
DO NOT USE ON CATS.

Directions:Spray over entire haircoat making sure the coat is thoroughly wetted to the skin. Spray against the lay of the hair, ruffling the coat on long-haired dogs. Weight of dog, length of hair and density of coat will determine amount of spray to be applied to wet the skin (average dose approxiately 7.5 g/kr). This 16oz bottle should be sufficient for four applications at a two-month interval to an average 30-35 lb. dog. Lighter applications will reduce period of effectiveness and require more frequent treatments. Allow dog to air dry or blow dry. Do not towel dry.