K9 Advantix II Large Dog 30-day treatment & prevention protects dogs 21-55 lbs. from fleas, ticks, mosquitoes, biting flies and lice Kills fleas within 12 hours of application Vet-recommended formula kills & repels on contact so fleas don’t have to bite your dog to...

K9 Advantix II Medium Dog 30-day treatment & prevention protects dogs 11-20 lbs. from fleas, ticks, mosquitoes, biting flies and lice Kills fleas within 12 hours of application Vet-recommended formula kills & repels on contact so fleas don’t have to bite your dog to...

K9 Advantix II Extra Large Dog 30-day treatment & prevention protects dogs over 55 lbs. from fleas, ticks, mosquitoes, biting flies and lice Kills fleas within 12 hours of application Vet-recommended formula kills & repels on contact so fleas don’t have to bite your...

K9 Advantix II Extra Large Dog 30-day treatment & prevention protects dogs over 55 lbs. from fleas, ticks, mosquitoes, biting flies and lice Kills fleas within 12 hours of application Vet-recommended formula kills & repels on contact so fleas don’t have to bite your...