Seresto is an effective and reliable alternative to monthly flea and tick topicals and kills fleas & ticks for 8 consecutive months. Seresto innovative technology to release the active ingredients in controlled doses over an extended period of time. Without the inconvenience of monthly applications. Seresto is used to protect our pet from fleas, flea eggs, flea larvae, ticks, as well as sarcoptic mange on dogs without odor or mess. For dogs (7 weeks of age or older).