Breaks the flea life cycle. Kills fleas, ticks, eggs and larvae. Prevents eggs from hatching and restarting the infestation cycle all over again. Great for hard to reach areas, such as under the bed and in corners. Continuous flea protection for 7 months.Active Ingredients: 0.015 percent Ethoxyl Pyridine and 0.400 percent 2,2-dimethryl.