Prac-tic Spot On is a highly effective topical treatment for dogs. It kills external parasites and prevents flea and tick infestations by destroying such parasites. Fleas such as Ctenocephalides canis and C. felis are eliminated within 24 hours. Moreover, it effectively controls Flea Allergy Dermatitis (FAD). Ticks such as Ixodes ricinus, Rhipicephalus sanguineus, Ixodes scapularis, Dermacentor reticulatus, Dermacentor variabilis, and Amblyomma americanum are destroyed within 48 hours. This spot on provides protection from future infestations for up to 4 weeks. Lastly, this spot on solution is safe to use on dogs and puppies over 8 weeks of age.