Frontline Plus For Medium Dogs is a topical ectoparasitic treatment for dogs. This spot-on formula is indicated for use in 8 weeks and older puppies and dogs that weigh between 10 to 20kg. Frontline Plus Blue kills adult fleas and eliminates flea eggs and larvae to keep dogs protected throughout the month, thus preventing reinfestations. It effectively treats tick infestations. Frontline Plus for 10-20kg Dogs protects against paralysis ticks for two weeks and against brown dog ticks for four weeks.