Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
K9 Advantix II XL Dog Flea, Tick & Mosquito Treatment & PreventionK9 Advantix II Extra Large Dog is the veterinarian recommended formula that helps defend your dog against five pests: fleas, ticks, mosquitoes, biting flies and lice. And unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes. K9 Advantix II topical treatment gets straight to work killing fleas on dogs within 12 hours of initial application. This formula stops existing flea infestations and prevents new ones by killing
K9 Advantix II Extra Large Dog is the veterinarian-recommended formula that helps defend your dog against five pests: fleas, ticks, mosquitoes, biting flies and lice. And unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes. K9 Advantix II topical treatment gets straight to work killing fleas on dogs within 12 hours of initial application. This formula stops existing flea infestations and prevents new ones by killing adult fleas on contact so they can’t lay eggs and they don’t have to bite your dog to die. Fleas, ticks, mosquitoes and other pests not only cause discomfort; they may also transmit disease. Monthly use of K9 Advantix II is important to protect your dog against fleas that may cause transmission of tapeworms. This formula also kills fleas which may cause Flea Allergy Dermatitis and flea bite anemia. That’s why K9 Advantix II Extra Large Dog topical, spot-on formula makes application simple - going on in seconds. It's easier than a flea collar and there are no hard-to-swallow pills. You’ll also love that K9 Advantix II is fragrance-free and waterproof after 24 hours of application. Check the product label for information on application and potential side effects. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. Your dog should be at least 7 weeks old and weigh over 55 lbs. to use K9 Advantix II Extra Large Dog. For the ultimate convenience in care, K9 Advantix II is available over the counter – no prescription needed. And, you can stock up with 2-dose, 4-dose and 6-dose packs so you never miss a monthly treatment. Once K9 Advantix II is applied, your dog is ready to get right back to big-pup cuddles and racing around the park. K9 Advantix II Extra Large Dog is a trademark of Elanco or its affiliates.
Key Features
-
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 dog to die
-
Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours
-
No prescription needed
Directions for Use
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.
Storage Instructions
Store in a cool, dry place inaccessible to children and pets. Protect from freezing.
Active Ingredients
Imidacloprid, Permethrin, Pyriproxyfen
Product Form
- Topical
Pet Size
- Extra Large
Pet Lifestage
- 7 weeks and older
Pet Weight
Over 55 lbs
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 464 reviews
Sort
Product Reviews
★★★★★ 5
Strong Toy
Color: Blue Puppy, Size: Medium Size 2
My dog loves this toy and lasted months. Just ordered a new one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 3
Well that didn't last long!
Color: Blue Puppy, Size: Medium Size 2
He loved it for the 15 minutes it took to destroy it! Cute design, but the material was thin enough to penetrate with his teeth and it was all over in a very short time! He still carries the carcass around and tries to play with it...it's sad. Definitely not for strong chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
★★★★★ 4
Decent ball
Color: Blue Puppy, Size: Medium Size 2
Context: I have a busy, anxious Corgi.
I like that it came with a pump to air it up.
My dog likes the tag feature on it which made the ball easy to carry. She chewed off the tags pretty quick.
She didn’t like herding this one as much. She prefers herding a basketball over this ball.
The ball sits in the backyard through all the weather and elements and has held up pretty well. We’ve had it about a year and it’s still a good toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
★★★★★ 1
Easily Ripped apart within minutes
Color: Blue Puppy, Size: Medium Size 2, Color: Blue Puppy, Size: Medium Size 2
I have a new foster who’s only 35 pounds not an aggressive chewer and loves to play with my dogs rooster soccer ball toy but the ball itself is a little big for her to get her teeny little mouth around when she’s trying to carry and run with it this happened to pop up on my feed a size smaller (medium, instead of large ) and available for next day delivery, so I bought it specifically for the little dog to play with. I gave it to her to play outside while my hound is busy playing with one of her toys I went about watering the garden, when I turned around a few minutes later, I saw the ball appeared to be completely flattened. As I walked over, I saw pieces of black rubber on the ground, and then the rest of the ball had a gaping hole in it. The rooster version of the ball that I bought from another seller has been going strong for months with multiple dogs playing with it and chewing on it and ripping the side ribbons apart so either I got a defective toy or the quality of manufacturer from this seller is much lower since the durability of the ball seems to be less than an hour.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2025
★★★★★ 5
Great ball
Color: Blue Puppy, Size: Medium Size 2
My babies love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
recommand products
Empire True Blue 48 In. Aluminum Magnetic I-Beam Level
41.49
2'7" x 17'2" New Hand Knotted Orange Wool Runner Oriental Rug - MOA10221184
966.50
3'8" x 14'5" New Hand Knotted Ivory Wool Runner Oriental Rug - MOA10221944
768.50
Cat Collar Breakaway - Leopard Brown Black Slash
19.95
Marshalltown 8" X 3" Pro-Style Blue Steel Taping Knife
14.99