PRESCRIPTION REQUIRED. Treatment and prevention of flea infestation (Ctenocephalides canis and C. felis.). Prac-tic is effective against new infestations with fleas for a minimum duration of 4 weeks. The product can be used as part of a treatment strategy for the control of Flea Allergy Dermatitis (FAD). Treatment and prevention of tick infestation (Ixodes ricinus, Ixodes scapularis, Dermacentor variabilis,Dermacentor reticulatus, Rhipicephalus sanguineus, Amblyomma americanum). Prac-tic has a persistent effect for 4 weeks against ticks.