hero banner

hero banner mobile

K9 Advantix II for Dogs

Usually shipped in 1-3 business days.* Learn more

K9 Advantix II for Dogs

$19.99
One-time purchase
$11.99 AutoShip & Save up to 40%
Availability:
  • In Stock

Prescription needed

We'll collect your vet's information at checkout to verify the prescription.

Weight: Over 55 Blue
Month Supply: 1 Month Supply
Weight: Over 55 Blue
Month Supply: 1 Month Supply
AutoShip & Save 40%
Save 40% on your 1st AutoShip order and 5% on all future AutoShip orders Learn more
  • Save 5% on Future Shipments
  • Free Shipping Over $30
  • Change, Skip, or Cancel Anytime
  • Convenient Automatic Delivery

With AutoShip, we remember so you don’t have to! Learn more

Sorry, there is a back order on this item

Special Discount Applied!

California Residents: Prop. 65 Warning

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

Usually shipped in 1-3 business days.* Learn more

Big Savings on Triple Protection!
Save up to 40% with AutoShip

$30 max savings.

Product Overview

Your dog’s world is full of adventures. Fleas, ticks and mosquitoes shouldn't be part of them. That's why there's K9 Advantix II, a convenient topical that provides 5-way protection against fleas, ticks, mosquitoes, biting flies, and lice in a single monthly dose. It's vet-recommended* flea, tick and mosquito treatment and prevention without a prescription.

This flea topical for dogs begins working the same day, killing fleas within 12 hours of application to help control active infestations. K9 Advantix II also prevents flea infestations by preventing the development of all flea stages: eggs, larvae, pupae and adults. Breaking the flea life cycle means less scratching for your dog and more peace of mind for you. What's more, K9 Advantix II for Dogs works through contact, killing and repelling fleas and ticks so they don't have to bite your dog to die. Even indoor dogs need protection against fleas and ticks––they can be brought inside on people or by other pets. By killing fleas on your dog before they lay eggs, K9 Advantix II helps control fleas and helps prevent re-infestation in your dog’s environment.

The fragrance-free formula becomes waterproof 24 hours after application. It remains effective and won't rub off after shampooing or swimming. Best of all, K9 Advantix II for Dogs is easy to use. Apply one topical dose every 4 weeks for reliable protection against fleas, ticks, mosquitoes, biting flies and lice.

Formulated for dogs and puppies 7 weeks of age and older weighing 4 lbs. or more, K9 Advantix II is available in multiple sizes: Small (4-10 lbs), Medium (11-20 lbs), Large (20-55 lbs), and Extra Large (over 55 lbs). Choose the one that aligns with your dog’s current weight to ensure proper dosing.

DO NOT USE ON CATS.

*Elanco Animal Health. Data on file. REF-24002
Dogs (7 weeks of age or older)
* 5-WAY PROTECTION: For 30 days, 1 dose of K9 Advantix II treats and prevents fleas, ticks, mosquitoes, biting flies, and lice on dogs; DO NOT USE ON CATS.

* SAME-DAY FLEA CONTROL: These tick and flea drops for dogs kills fleas on dogs within 12 hours of application, helping provide relief from active infestations.

* REPELS & KILLS THROUGH CONTACT: K9 Advantix II kills and repels fleas and ticks through contact, so they don't have to bite your dog to die.

* VET-RECOMMENDED*: K9 Advantix II for Dogs is vet-recommended* flea, tick, and mosquito treatment and prevention without a prescription.

* EASY-TO-APPLY MONTHLY PROTECTION: This convenient flea and tick topical is easy to apply, and no prescription is needed.

* WATERPROOF FLEA DROPS: K9 Advantix II for dogs is waterproof after 24 hours of application, so it continues working after bathing, swimming or walks in the rain; it stays on and won't rub off.

This flea topical for dogs stops existing flea infestations by killing adult fleas, and it prevents the development of flea eggs and flea larvae so they can't reinfest your dog.
Between day 6 and 9 after application, certain adverse reactions have occurred in rare cases. These include weakness, depression, and unsteadiness. These signs resolved on their own without intervention by day 10 after application. In laboratory effectiveness studies, certain adverse reactions occurred after application (and were directly attributed to the use of this medication). They could also be secondary to the burden of a pre-existing condition or of intestinal parasites. These signs include diarrhea, bloody stools, vomiting, anorexia, lethargy, coughing, ocular discharge, or nasal discharge. Application site reactions may include stiff or greasy hair, white deposits on the hair, or mild erythema (redness of the skin). These reactions often resolve between 2 and 48 hours with no intervention.
Imidacloprid, Permethrin, Pyriproxyfen
Contact your closest emergency animal hospital.
Dogs should be isolated for a minimum of 12 hours after K9 Advantix II is applied to ensure adequate and thorough dry time if you have cats in the home. K9 Advantix II Adverse Reactions may be referenced if the pet experiences an adverse reaction to this medication.Never handle or allow a child to handle a treated dog until the application site is completely dry. Ensure this lack of contact by treating the dog in the evening hours and by stopping them from sleeping with any human family member.
Sold in 2, 4, 6, and 12 month supplies based on your dog's weight. Boxes are color coded to your dog's weight.
  • Green: Up to 10 pounds
  • Teal: 11 - 20 pounds
  • Red: 21 - 55 pounds
  • Blue: Over 55 pounds
Elanco
Do not handle treated dogs, or allow children to do so, until the site of application dries. You can help ensure this by treating your dog in the evening and not allowing them to sleep with children or other human family members.
Use only on dogs. DO NOT USE ON CATS or other animals. Do not apply to dogs weighing less than 4 lbs.

Remove applicator tube from the package. Use scissors and peel down foil.

Hold applicator tube in an upright position. Pull cap off tube.

Turn cap around and place other end of cap back on tube.

Twist cap to break seal, then remove cap from tube.

The dog should be standing for easy application. Evenly apply entire contents of the tube along the top of the dog's back, from the shoulder down to the base of the tail. The number of spots depends on the size and weight of your dog (please refer to the product label). At each spot, part the hair until skin is visible. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. Do not apply an excessive amount of solution at any one spot that could cause some of the solution to run off the side of the dog. Do not get this product in your dog’s eyes, or allow your dog to ingest this product.
Active Ingredients  /   % By Weight
Imidacloprid                      8.80%
Permethrin*                      44.00%
Pyriproxyfen                      0.44%
Other Ingredients              46.76%
 
Total                                 100.0%
 
*cis/trans ratio: max 55% (±) cis and min 45% (±) tr
K9 Advantix II for Dogs Description
Your dog’s world is full of adventures. Fleas, ticks and mosquitoes shouldn't be part of them. That's why there's K9 Advantix II, a convenient topical that provides 5-way protection against fleas, ticks, mosquitoes, biting flies, and lice in a single monthly dose. It's vet-recommended* flea, tick and mosquito treatment and prevention without a prescription.

This flea topical for dogs begins working the same day, killing fleas within 12 hours of application to help control active infestations. K9 Advantix II also prevents flea infestations by preventing the development of all flea stages: eggs, larvae, pupae and adults. Breaking the flea life cycle means less scratching for your dog and more peace of mind for you. What's more, K9 Advantix II for Dogs works through contact, killing and repelling fleas and ticks so they don't have to bite your dog to die. Even indoor dogs need protection against fleas and ticks––they can be brought inside on people or by other pets. By killing fleas on your dog before they lay eggs, K9 Advantix II helps control fleas and helps prevent re-infestation in your dog’s environment.

The fragrance-free formula becomes waterproof 24 hours after application. It remains effective and won't rub off after shampooing or swimming. Best of all, K9 Advantix II for Dogs is easy to use. Apply one topical dose every 4 weeks for reliable protection against fleas, ticks, mosquitoes, biting flies and lice.

Formulated for dogs and puppies 7 weeks of age and older weighing 4 lbs. or more, K9 Advantix II is available in multiple sizes: Small (4-10 lbs), Medium (11-20 lbs), Large (20-55 lbs), and Extra Large (over 55 lbs). Choose the one that aligns with your dog’s current weight to ensure proper dosing.

DO NOT USE ON CATS.

*Elanco Animal Health. Data on file. REF-24002
Which animals/pets is K9 Advantix II for Dogs for?
Dogs (7 weeks of age or older)
K9 Advantix II for Dogs uses
* 5-WAY PROTECTION: For 30 days, 1 dose of K9 Advantix II treats and prevents fleas, ticks, mosquitoes, biting flies, and lice on dogs; DO NOT USE ON CATS.

* SAME-DAY FLEA CONTROL: These tick and flea drops for dogs kills fleas on dogs within 12 hours of application, helping provide relief from active infestations.

* REPELS & KILLS THROUGH CONTACT: K9 Advantix II kills and repels fleas and ticks through contact, so they don't have to bite your dog to die.

* VET-RECOMMENDED*: K9 Advantix II for Dogs is vet-recommended* flea, tick, and mosquito treatment and prevention without a prescription.

* EASY-TO-APPLY MONTHLY PROTECTION: This convenient flea and tick topical is easy to apply, and no prescription is needed.

* WATERPROOF FLEA DROPS: K9 Advantix II for dogs is waterproof after 24 hours of application, so it continues working after bathing, swimming or walks in the rain; it stays on and won't rub off.

What does K9 Advantix II for Dogs do?
This flea topical for dogs stops existing flea infestations by killing adult fleas, and it prevents the development of flea eggs and flea larvae so they can't reinfest your dog.
K9 Advantix II for Dogs side effects
Between day 6 and 9 after application, certain adverse reactions have occurred in rare cases. These include weakness, depression, and unsteadiness. These signs resolved on their own without intervention by day 10 after application. In laboratory effectiveness studies, certain adverse reactions occurred after application (and were directly attributed to the use of this medication). They could also be secondary to the burden of a pre-existing condition or of intestinal parasites. These signs include diarrhea, bloody stools, vomiting, anorexia, lethargy, coughing, ocular discharge, or nasal discharge. Application site reactions may include stiff or greasy hair, white deposits on the hair, or mild erythema (redness of the skin). These reactions often resolve between 2 and 48 hours with no intervention.
K9 Advantix II for Dogs ingredients
Imidacloprid, Permethrin, Pyriproxyfen
K9 Advantix II for Dogs overdose: What to do?
Contact your closest emergency animal hospital.
What to know before using K9 Advantix II for Dogs
Dogs should be isolated for a minimum of 12 hours after K9 Advantix II is applied to ensure adequate and thorough dry time if you have cats in the home. K9 Advantix II Adverse Reactions may be referenced if the pet experiences an adverse reaction to this medication.Never handle or allow a child to handle a treated dog until the application site is completely dry. Ensure this lack of contact by treating the dog in the evening hours and by stopping them from sleeping with any human family member.
How is K9 Advantix II for Dogs sold?
Sold in 2, 4, 6, and 12 month supplies based on your dog's weight. Boxes are color coded to your dog's weight.
  • Green: Up to 10 pounds
  • Teal: 11 - 20 pounds
  • Red: 21 - 55 pounds
  • Blue: Over 55 pounds
Manufacturer
Elanco
Tips for using K9 Advantix II for Dogs
Do not handle treated dogs, or allow children to do so, until the site of application dries. You can help ensure this by treating your dog in the evening and not allowing them to sleep with children or other human family members.
Overview
Use only on dogs. DO NOT USE ON CATS or other animals. Do not apply to dogs weighing less than 4 lbs.

Remove applicator tube from the package. Use scissors and peel down foil.

Hold applicator tube in an upright position. Pull cap off tube.

Turn cap around and place other end of cap back on tube.

Twist cap to break seal, then remove cap from tube.

The dog should be standing for easy application. Evenly apply entire contents of the tube along the top of the dog's back, from the shoulder down to the base of the tail. The number of spots depends on the size and weight of your dog (please refer to the product label). At each spot, part the hair until skin is visible. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. Do not apply an excessive amount of solution at any one spot that could cause some of the solution to run off the side of the dog. Do not get this product in your dog’s eyes, or allow your dog to ingest this product.
Main Ingredients
Active Ingredients  /   % By Weight
Imidacloprid                      8.80%
Permethrin*                      44.00%
Pyriproxyfen                      0.44%
Other Ingredients              46.76%
 
Total                                 100.0%
 
*cis/trans ratio: max 55% (±) cis and min 45% (±) tr
How to Combat Flea and Tick Attacks in Winter. Read the article here.

Reviews