K9 Advantix ii Medium Dog 11-20 lbs 4 Packs Great Deal! Net contents : 4 tubes, contains 0.034 fl oz (1.0 ml) in each tube. Protection duration 4 months. Advantix for medium dogs weighing 11 - 20 lbs can be used as an effective flea control and treatment. Also kills and protects against ticks, biting flies, lice and MOSQUITOS!! 100% Genuine, US EPA Approved! No Expiration Dates. Ship to : United States.