PURINA TOTAL CARE Flea & Tick Control Plus for Large Dogs kills onset and re-infestations with newly acquired adult fleas for one month. It also prevents the development of flea eggs, larvae and pupae produced by adult fleas acquired for three months after treatment. It controls brown dog ticks for one month, and paralysis ticks for two weeks. It may be used for the treatment and control of Flea Allergy Dermatitis in dogs. It may be used as the only product for flea control as it kills all stages of fleas. Units in pack: 1 x 2.68 mL Tube Dosage: Once a month Suitable for: Large dogs 20 to 40 kg in bodyweight Country of Origin: China