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Product Details

Description
  • Easy-to-apply topical treatment can be used monthly for year-round protection
  • Kills ticks, fleas through contact – no biting required. Kills lice and mosquitoes too!
  • Breaks the flea life cycle to treat and control flea infestations in the home
  • Safe for dogs and puppies 8 weeks and older
  • DO NOT USE K9 Advantix II ON CATS

Veterinarian recommended K9 Advantix II kills parasites through contact – no biting required. Did you know that flea bites can cause flea allergy dermatitis (FAD) and skin infections? A single flea can lay up to 50 eggs per day leading to infestations even in your home. In addition to biting and feeding on pets, ticks can transmit diseases like Lyme disease. Bites from infected mosquitoes can spread heartworm disease. Get multi-stage flea and tick protection for your dog today, from Canada’s most trusted brand – K9 Advantix II. DO NOT USE K9 Advantix II ON CATS.

Important information

Safety Information

For use ONLY on dogs. Toxic to cats. Cats that actively groom or engage in close physical contact with recently treated dogs may be at risk of serious harm, including death. Sensitivities may occur after using any pesticide for pets. Smaller animals are more likely to experience an adverse reaction. Observe carefully. 

Directions

Please remove the collar prior to application. The dog should be standing for easy application. Part the hair on the dog’s back between the shoulder blades until the skin is visible. Place the tip of the tube on the skin and squeeze the tube to completely empty the contents directly on the skin.

Information

Important information

Safety Information

For use ONLY on dogs. Toxic to cats. Cats that actively groom or engage in close physical contact with recently treated dogs may be at risk of serious harm, including death. Sensitivities may occur after using any pesticide for pets. Smaller animals are more likely to experience an adverse reaction. Observe carefully. 

Directions

Please remove the collar prior to application. The dog should be standing for easy application. Part the hair on the dog’s back between the shoulder blades until the skin is visible. Place the tip of the tube on the skin and squeeze the tube to completely empty the contents directly on the skin.

FAQs

Please read our FAQs page to find out more about PetMax.

What is K9 Advantix II for Medium Dogs?
Topical monthly flea/tick/mosquito control for medium-sized dogs. Same multi-active formula as the larger versions, dosed for medium body weight ranges.
Mosquito protection?
Yes — K9 Advantix II repels mosquitoes, which matters because mosquitoes transmit heartworm. The product doesn't replace heartworm preventive (which targets the parasite once it's in the dog), but it adds a layer of bite-prevention.
How do I apply?
Squeeze the contents along the skin from the shoulder blades to the base of the tail. Make sure the liquid contacts skin, not just fur. No bathing for 24 hours.
How long does it last?
Up to 30 days per dose. Some users find protection drops off near the end of the month — apply slightly early if you're at the tail end of effectiveness during heavy tick season.
What if I also have cats?
K9 Advantix II is toxic to cats. Keep treated dogs separate from cats for at least 24 hours after application, and never apply this product to a cat. Use Advantage II on the dog if cat contact is unavoidable.