Fleas and ticks are present everywhere affecting dog’s health. To protect dogs from such external parasites, a powerful flea and tick treatment is necessary. Frontline Plus for dogs is a fast-acting and long-lasting solution that kills external parasites. Treating fleas and ticks, this topical solution also protects dogs against flea and tick borne diseases. This spot-on treatment successfully destroys all life stages of fleas and prevents further re-infestation. Information: A product by Merial, Frontline Plus for dogs is a monthly spot-on treatment that prevents flea and tick infestation. The combination of two active ingredients - fipronil and S-methoprene, magically work to kill fleas within 24 hours and ticks within 48 hours of application. Fipronil kills adult fleas and ticks, and the other chemical (S)-methoprene breaks flea life cycle by attacking flea eggs and larvae. Working together, their effect lasts for a month. Frontline Plus spreads across dog’s skin evenly because of its penetration action, and lasts for weeks.