From eggs to adults, you can kill fleas at every stage of their life with the easy-to-use Frontline Spray. Controls fleas for up to 90 days and ticks for up to 30 days on animals over 8 weeks of age. Active ingredient: 0.29% Fipronil. Due to state regulations, we are not able to ship Frontline Spray to Alaska, California, Hawaii, New Jersey, New York, North Carolina and Ohio.