Effipro Flea Treatment for DogsEffipro Spot-on for Dogs provides effective treatment against fleas and ticks. With a new formulation of fipronil, the topical solution kills fleas for 8 weeks and ticks for 4 weeks. Effipro spot on destroys adult fleas before they lay eggs and further prevents future infestations. Recommended for monthly application, it controls various ticks and tick-borne diseases. The spot-on is easy to apply with zero spill technology and remains effective for one month.