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k9 advantix ii

K9 Advantix II

Pet Size

Don't know your pet's weight?

If you can't get them on the scale, try this super simple method:

  1. Weigh yourself.
  2. Weigh yourself holding your pet.
  3. Subtract the two numbers to get their weight.

Too heavy to hold? Your vet will weigh them if you ask (or may already have it on file if you call).


No Prescription Required

  • Description

    K9 Advantix II is a topical flea and tick solution that begins killing fleas and ticks within 12 hours of being applied and is also able to eliminate chewing lice plus deter mosquitos and biting flies. This means it gives your dog or cat reliable protection from all the biting and itchiness that comes with these problems. Part of why K9 Advantix 2 is so well regarded among pet owners is because it also works to kill flea eggs and larvae and you’ll soon see your pet being much less bothered by these pests. K9 Advantix II for large dogs is a good choice for treating flea allergy dermatitis too.

    Order K9 Advantix II from World Pet Express and get the best price on this effective flea and tick medication for dogs or cats.


    Purchase either the small, medium, large, or extra-large dog size of K9 Advantix 2 and follow the application directions exactly as provided. After opening the applicator you spread the fur at the base of your pet’s neck and apply the entirety of the dosage directly onto the skin. Allow it to spread on its own, do not use your fingers or any other implement.

    Repeat once a month at the same time each month. Do not exceed once-a-month application, even if you are not seeing the improvements you expect. Speak with your veterinarian if you have any such concerns.

    The product is waterproof but allow the product to sit for 24 hours before allowing dog to swim or get wet.


    Imidacloprid / Permethrin / Pryriproxyfen


    See back of panel for First Aid information. See supplemental labeling inside package for direction for use and safety precautions.


    There are no known interaction risks between use of K9 Advantix II for dogs and cats and any other R pet supplement or Rx medication.

    Side Effects

    Side effects related to the use of K9 Advantix II are uncommon, but may include lethargy, vomiting, skin irritation, nausea, or agitation. Any such symptoms that no do subside or increase should lead you to discontinue use and see your veterinarian.

    Frequently Asked Questions about K9 Advantix II

    What's the difference between K9 Advantix and K9 Advantix II?

    K9 Advantix II is an updated formula that not only repels and kills fleas, ticks, and mosquitoes but also prevents flea larvae from developing. It provides broader protection compared to the original K9 Advantix.

    How to apply K9 Advantix II?

    Apply K9 Advantix II by parting your dog's fur and applying the solution directly to the skin between the shoulder blades. Ensure it is applied to an area where your dog cannot lick it off.

    How does K9 Advantix II work?

    K9 Advantix II works by directly affecting the nervous system of fleas, ticks, and mosquitoes upon contact, effectively killing them. Additionally, it disrupts the development of flea larvae, preventing reinfestation.

    Is K9 Advantix II safe for dogs?

    Yes, when used according to the instructions, K9 Advantix II is generally safe for dogs. However, it's essential to follow dosage instructions carefully and ensure it's not ingested.

    What are the side effects of K9 Advantix II on dogs?

    Potential side effects may include skin irritation, redness, or itching at the application site. In rare cases, dogs may exhibit symptoms like lethargy or vomiting. If any adverse reactions occur, consult your veterinarian.

    Does K9 Advantix II expire?

    Yes, K9 Advantix II has an expiration date printed on the packaging. It's essential to check the expiration date before use and not to use expired products.

    How fast does K9 Advantix II work?

    K9 Advantix II starts working within 12 hours of application, killing fleas, ticks, and mosquitoes upon contact.

    How long does K9 Advantix II last?

    K9 Advantix II provides protection for up to 30 days against fleas, ticks, and mosquitoes.

    How long does K9 Advantix II take to dry?

    K9 Advantix II typically dries within a few hours after application, depending on environmental conditions such as humidity.

    Does K9 Advantix II prevent heartworms?

    No, K9 Advantix II does not prevent heartworms. It is primarily designed to repel and kill fleas, ticks, and mosquitoes.

    Does K9 Advantix II require a prescription?

    K9 Advantix II is an over-the-counter product and does not require a prescription for purchase.

    Product Code : 12336