Frontline Gold for Dogs kills adult fleas, ticks, flea eggs, flea larvae, and Ticks (including those that may transmit Lyme disease larvae). Even faster than Frontline Plus. Frontline Gold starts working within 30 minutes and lasts for 30 days! Provides fast-acting, long-lasting treatment and control from the makers of Frontline Plus. Easy to apply and waterproof 24 hours after application.