ULTRUM® Line-up® is a spot-on treatment that works quickly and effectively against the prevention of tick and flea infestations in dogs. One treatment of ULTRUM® Line-up® for dogs kills adult fleas on contact and continues to kill for up to 4 weeks. It inhibits development of flea eggs and larvae for 5 months after application. ULTRUM® Line-up® for dogs is also effective against ticks. One pack (available in 4 convenient sizes) will provide 8 weeks protection against adult fleas, 10 months protection against eggs and larvae and 6 weeks protection against ticks.