& FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
FREE delivery: Sunday, April 25 Details
Fastest delivery: Thursday, April 22
Order within 2 hrs and 44 mins
Details
In Stock.
$$48.98 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$48.98
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Ships from Amazon.com
Sold by Amazon.com
Ships from
Amazon.com
Sold by
Amazon.com
K9 advantix II Flea and T... has been added to your Cart

Unlock extra savings

Receive 5 or more products in one auto-delivery to one address and unlock extra savings on all eligible products.

Choose how often it's delivered

From once every 2 weeks to once every 6 months

Skip or cancel any time

We'll send you a reminder before each delivery.
Save 5% on all deliveries. Learn more
Get it Sunday, Apr 25
In Stock.
Deliver every:
Ships from and sold by Amazon.com
Other Sellers on Amazon
$48.98
+ Free Shipping
Sold by: tranaction
$52.98
& FREE Shipping on eligible orders. Details
Sold by: Pets Go Here - Pet Store

K9 advantix II Flea and Tick Prevention for Large Dogs, 21-55 Pounds

4.5 out of 5 stars 21,653 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Dog Flea Drops by K9 advantix

List Price: $60.83 Details
Price: $48.98 & FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
You Save: $11.85 (19%)
Save $2.24 at checkout. Details
4-pack
Large Dog Only

Enhance your purchase

Brand K9 advantix
Age Range Description Senior
Item Volume 16 Milliliters

About this item

  • 4 monthly applications of K9 Advantix II flea and tick prevention for large dogs weighing 21-55 pounds
  • K9 Advantix II flea and tick prevention for dogs works through contact, so fleas, ticks and mosquitoes do not have to bite your dog to die
  • K9 Advantix II flea and tick control for dogs is an easy to apply topical formula
  • Starts working to kill fleas within 12 hours and keeps working for 30 days
  • Suitable for effective year-round dog flea and tick treatment for large dogs
New (7) from $48.98 + FREE Shipping

Shop the top subscription boxes for cats and dogs Shop the top subscription boxes for cats and dogs


Special offers and product promotions

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question might be answered by sellers, manufacturers, or customers who bought this product.

Please make sure that you are posting in the form of a question.

Please enter a question.


From the manufacturer

Compare K9 Advantix II to FRONTLINE Plus, BRAVECTO, NexGard, PetArmor
K9 Advantix II — Extra Large Dog, 6 Pack — Flea, Tick and Mosquito Prevention for Dogs K9 Advantix II — Large Dog, 6 Pack — Flea, Tick and Mosquito Prevention for Dogs K9 Advantix II — Medium Dog, 6 Pack — Flea, Tick and Mosquito Prevention for Dogs K9 Advantix II — Small Dog, 6 Pack — Flea, Tick and Mosquito Prevention for Dogs Seresto Flea Collar for Dogs — Large Dog, 1 Pack Seresto Flea Collar for Dogs — Small Dog, 1 Pack
See it Now See it Now See it Now See it Now See it Now See it Now
Weight Extra Large Dog (Over 55 lbs) Large Dog (21-55 lbs) Medium Dog (11-20 lbs) Small Dog (4-10 lbs) Large Dog (Over 18 lbs) Small Dog (Up to 18 lbs)
Form Topical Flea and Tick Treatment Topical Flea and Tick Treatment Topical Flea and Tick Treatment Topical Flea and Tick Treatment Flea and Tick Collar Flea and Tick Collar
Frequency Monthly Monthly Monthly Monthly Every 8 Months Every 8 Months
Kills Fleas
Kills Ticks
Kills Mosquitoes
Kills Lice
Repels Biting Flies

Product description

Size:4-pack  |  Style:Large Dog Only

The 4-pack of Bayer K9 Advantix II flea and tick prevention for large dogs is a broad-spectrum, veterinarian-recommended dog flea and tick prevention that also kills and repels mosquitoes, a benefit not found in many other flea and tick products. Some products require a flea or tick to bite your dog in order to work, but K9 Advantix II flea and tick prevention for dogs is a topical formula that works through contact, so your dog doesn’t have to endure a painful bite for the flea, tick or mosquito to die. Just one application of Bayer K9 Advantix II flea and tick prevention for large dogs starts working to kill fleas within 12 hours, is waterproof after 24 hours, and continues to work to kill fleas, ticks and mosquitoes for up to 30 days, even after a bath or swimming. We recommend the use of a grooming shampoo designed specifically for pets. Do not use K9 Advantix II on cats. Use only on dogs.

Product details

Size:4-pack  |  Style:Large Dog Only
  • Is Discontinued By Manufacturer : No
  • Product Dimensions : 7.75 x 1 x 4.25 inches; 1.45 Ounces
  • Item model number : 86315041
  • Date First Available : March 4, 2011
  • Manufacturer : Bayer
  • ASIN : B004QMX4YW
  • Customer Reviews:
    4.5 out of 5 stars 21,653 ratings

Important information

Directions

Application Instructions: 1. Use only on dogs. DO NOT USE ON CATS or other animals. 2. The dog should be standing for easy application. Evenly apply the entire contents of the K9 Advantix® II tube to four to six spots on the top of the back from the shoulder to the base of the tail. 3. At each spot, part the hair until the skin is visible. 4. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. 5. 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. 6. Do not get this product in your dog’s eyes, or allow your dog to ingest this product.

Legal Disclaimer

For use only with dogs.

Compare with similar items


K9 advantix II Flea and Tick Prevention for Large Dogs, 21-55 Pounds
Amazon Brand - Solimo Flea and Tick Topical Treatment for Dogs (Small, Medium, Large, XLarge)
K9 Advantix II Flea and Tick Prevention for Extra-Large Dogs, Over 55 Pounds
K9 Advantix II Flea and Tick Prevention for Medium Dogs, 11-20 Pounds
Frontline Plus Flea and Tick Treatment for Dogs (Large Dog, 45-88 Pounds, 6 Doses)
Frontline Plus Flea and Tick Treatment for Dogs (Medium Dog, 23-44 Pounds, 3 Doses)
Customer Rating 4.5 out of 5 stars (21653) 4.1 out of 5 stars (11532) 4.5 out of 5 stars (24083) 4.4 out of 5 stars (15662) 4.4 out of 5 stars (8900) 4.4 out of 5 stars (6262)
Price $48.98 $39.42 $48.98 $48.98 $67.99 $36.99
Shipping FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com

Customer Questions & Answers

Customer reviews

4.5 out of 5 stars
4.5 out of 5
21,653 global ratings
How are ratings calculated?

Top reviews from the United States

Reviewed in the United States on April 30, 2020
Size: 2-packStyle: Large Dog OnlyVerified Purchase
645 people found this helpful
Report abuse
Reviewed in the United States on April 30, 2018
Size: 2-packStyle: Large Dog OnlyVerified Purchase
319 people found this helpful
Report abuse
Reviewed in the United States on August 29, 2018
Size: 6-packStyle: Large Dog OnlyVerified Purchase
Customer image
1.0 out of 5 stars Nearly killed my dog
By Robert W. Finlay on August 29, 2018
Not sure what exactly is wrong, but I notified Bayer, the manufacturer about this adverse effect. Bought a 6 pack, and he did fine with first 5 months. Sixth dose (always on first of month) he got lethargic, irritable, and partially paralyzed. Washed him immediately, and will never use again. I bought peppermint oil, and spray him with this diluted in water now. Never again ADVANTIX II
Images in this review
Customer image
Customer image
118 people found this helpful
Report abuse
Reviewed in the United States on May 10, 2018
Size: 6-packStyle: Large Dog OnlyVerified Purchase
123 people found this helpful
Report abuse
Reviewed in the United States on October 26, 2017
Size: 6-packStyle: Large Dog OnlyVerified Purchase
54 people found this helpful
Report abuse