Frontline Plus for dogs provides fast, effective and convenient treatment and control of fleas, ticks and chewing lice for dogs 23-44 lbs. Research demonstrates that Frontline Plus kills and prevents development of adult fleas, flea eggs, and larvae and for up to three months. Although Frontline Plus can control fleas for up to three months, if there is a high risk of reinfestation or if the pet has fleas which may cause flea allergy dermatitis, a one monthly application may be needed. Frontline Plus also kills ticks and chewing lice for at least one month. A once monthly application is recommended where tick and chewing lice control is needed. Kills all stages of brown dog ticks, American dog ticks, lone star ticks and deer ticks. Frontline Plus remains effective even after bathing, water immersion, or exposure to sunlight. "EPA REGISTERED, US-LABELED PACKAGED PRODUCT" Shipping weight: 1/6 lb.