You are getting (one) single packet of Frontline Plus 45-88 lbs with this listing

Frontline flea and tick treatment for dogs is fast acting and kills fleas, flea eggs, lice, and ticks, including those that may transmit Lyme disease.

Trusted flea and tick protection for dogs: Frontline has been trusted by veterinarians for nearly 20 years. Made with 2 tough killing ingredients, fipronil and (S)-methoprene – one to kill adult fleas and ticks and the second to kill flea eggs and larvae – this fast-acting, long-lasting protection provides flea and tick control for dogs and puppies 8 weeks and older.

Lasting flea and tick protection: Frontline's long-lasting formula is stored in the oil glands of the pet’s skin to give non-stop flea and tick protection for a full 30 days. Frontline flea and tick treatment for dogs works non-stop for a full 30 days. Frontline is also waterproof