Hagen Flea Killer Pump Spray kills fleas, American dog ticks, and brown ticks. It also aids in repelling biting fleas, gnats and mosquitoes. The spray contains residuals to continue killing fleas. For effective flea and tick control, treatment of the pet should be combined with the sanitation of any area used by the pet. The non-aerosol spray pump holds 300 ml (10 oz).