(Bayer) Resultix Tick Spray kills attached and crawling ticks on dogs and cats. Non-pesticidal formula is safe for use as often as needed. Simply direct 2 sprays of Resultix at the tick. Within 3 hours, tick will die and fall off or can be removed. Resultix Tick Spray contains isopropyl myristate, which dissolves the outer waxy layer of the tick and results in water loss and death. Resultix 20 ml bottle contains approximately 200 sprays.