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  6. 12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)

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12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs) Video

12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)

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Keep your dog safe from irritating and dangerous pests with K9 Advantix II for Large Dogs weighing 21-55 pounds. Formulated for dogs seven weeks of age and older and weighing 21-55 pounds , K9 Advantix II outperforms its competitors not only by killing more varieties of pests, but also by repelling them to prevent future attacks.


K9 Advantix II is one of the top choices for eliminating the resident tick or flea population. It is manufactured by Bayer, one of the leading pet care companies in the world. This product promises to kill and repel ticks, fleas, and mosquitoes. Its waterproof formulation remains effective even after the pet gets wet. The K9 Advantix II solution works by attacking all the life stages of the parasites killing adult bugs, larvae, and eggs. The K9 Advantix II Teal is a specialized product for medium dogs weighing 11 to 20 lbs. This particular pack contains 4 doses, which is good for 4 months of protection against ticks and fleas.

  • For medium dogs weighing 11-20 lbs
  • Manufactured by Bayer
  • Waterproof formulation
  • Repels ticks, fleas and mosquitoes
  • Kill parasites of all life stages
  • For dogs only


Imidacloprid: Imidacloprid is an ectoparasiticide, an antiparasitic agent that targets parasites living primarily on the surface of a host. Chemically classified as a chloronicotinyl nitroguanidine, imidacloprid inhibits neurotransmitter transmission in insects, resulting in paralysis and death.

Benefits: Imidacloprid exhibits both adulticide and larvicidal flea efficacy; it not only kills adult fleas and larvae on your pet, but it also kills larval stages in your pet's immediate surroundings.

Main Purpose: To kill fleas at all stages of their life cycles and stop them from being able to move or feed.

Permethrin: Permethrin is the additional ingredient in Advantix. It belongs to the Type I class of pyrethroid acaricides and insecticides, and it also acts as a repellent. Pyrethroids affect muscle and nerve cells' sodium ion channels by increasing their mean open time, which leads to hyperexcitability and death of the parasite.

Benefits: Thanks to its repelling activity, permethrin reduces parasite bites and thus the risk of diseases and stress for your dog.

Main Purpose: To repel ticks, sand flies, and mosquitoes; to kill ticks and fleas.

Two Proven Ingredients with Enhanced Activity: Imidacloprid and permethrin work together to overwhelm the nervous system of the parasite, providing neurotoxic activity beyond that of each compound alone. This leads to more profound and quicker insect paralysis and death.

Specifically, imidacloprid increases the efficacy of permethrin by activating insect nerve cells and increasing the frequency of neurotransmissions. As a result, more sodium channels are opened and the pyrethroid can interact much better with its target site.

Pyriproxyfen: Pyriproxyfen is a pyridine-based pesticide. A juvenile hormone analog, it interferes with the hormone signaling of growing insects, so that insects in immature stages are unable to mature. Additionally, a female insect that touches the toxin will produce eggs that will not hatch.

Benefits: Pyriproxyfen provides an added layer of protection for pets and their surroundings. It interrupts the flea life cycle at multiple stages, halting the growth and development of insect eggs and larvae and preventing re-infestation.

Main Purpose: To prevent flea eggs from hatching and larvae from growing.

Active Ingredients % by Weight
Imidacloprid 8.80%
Permethrin* 44.00%
Pyriproxyfen 0.44%
Other Ingredients 46.76%
Total 100%

Useful Information

Applying K9 Advantix II to your pet is a fast and easy process. First, remove the K9 Advantix II applicator tube from its packaging and use scissors to peel down the foil. Next, hold the applicator tube in an upright position and pull the cap off the tube. Use the upturned cap to break the protective seal, and you're ready for application.

For easiest application, your dog should be standing upright. Evenly apply the entire contents of the K9 Advantix II tube to two or three spots from the back of the shoulder to the base of the tail. Part the hair at each spot until the skin is visible, then place the tip of the tube on the skin and gently squeeze out a portion of the solution. Be careful not to apply an excessive amount of the solution in any one spot, otherwise some of the solution might run off the side of your dog. Dispose of the container and do not reuse or refill. Do not empty unused product in any indoor or outdoor drain.

For optimal control and prevention of parasites, use K9 Advantix II every month. K9 Advantix II is available in four- and six-month supplies. Do not use K9 Advantix II on cats or any animals other than dogs.

Application Instructions: Evenly apply the entire contents of the tube to four to six spots on the top of the back--from the shoulder to the base of the tail. Apply monthly.

Length of Effectiveness: Under normal conditions, the product is effective for one month. However, in cases of severe flea infestation, re-treatment may be necessary earlier than four weeks. Do not retreat more often than once every seven days. After flea control is attained, return to a monthly re-treatment schedule.

Hazards to Humans: Causes eye irritation. Harmful if swallowed. Do not get in eyes or on clothing. Avoid contact with skin. Wash hands thoroughly with soap and warm water after handling.

Hazards to Domestic Animals:

*For external use on dogs only. *Do NOT use on animals other than dogs. *Do NOT use on puppies under seven weeks of age.

Do not get this product on dog's eyes or mouth. Consult your veterinarian before using this product on debilitated, aged, pregnant, or nursing animals. Individual sensitivities, while rare, may occur after using any pesticide product for pets. If signs persist, or become more severe, consult a veterinarian immediately. If your animal is on medication, consult your veterinarian before using this product.

Do Not Use on Cats: Due to their unique physiology and inability to metabolize certain compounds, cats must not use this product. If applied to a cat, or ingested by a cat that actively grooms a recently treated dog, this product may have serious harmful effects. If this occurs, contact your veterinarian immediately.

Environmental Hazards: This product is extremely toxic to fish. Do not add directly to water. Do not contaminate water when disposing of product or package.

    First Aid: Have the product container or label with you when calling a poison control center or doctor, or when going for treatment.

    If in eyes: Hold eye open and rinse slowly and gently with water for 15 to 20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice.

    If swallowed: Call poison control center or doctor immediately for treatment advice. Have person sip a class of water if able to swallow. Do not induce vomiting unless told to do so by the poison control center or doctor. Do not give anything by mouth to an unconscious person.

    If on skin or clothing: Take off contaminated clothing. Rinse skin immediately with plenty of water for 15 to 20 minutes. Call a poison control center or doctor for treatment advice.

    To physician: Treat patient symptomatically.

Keep out of reach of children.

Customer Reviews

44 Reviews
91% (40)
7% (3)
0% (0)
0% (0)
2% (1)
98% Recommend this product (43 of 44 responses)
By Michel
Montreal, Quebec CANADA
June 21, 2019
Essential for your dog
Great product for the security of your dog
By RianiIwas
July 8, 2018
Great Price
Product was delivered quickly and packed well.....
By Boston4
Tamaqua, PA
April 12, 2018
Never fails!
I tried Advantix II on my boston terriers after trying another topical flea/tick prevention failed. I've also tried the 8 month collar. This product is by far my favorite! It has never failed to repel fleas, ticks and mosquitoes even after I've bathed the dogs! Recommend!!
ProsLasts through bathing
ConsCan feel sticky
By AnitaM2
Roseville, Ca
May 5, 2017
K9 Advantix II
I've been using this product on my poodle for 2 years and it's been great. We live in town but there are always small squirrels, possum and raccoons in our backyard. The Advantix let's Indy and I sleep better knowing he's protected from fleas and other pests. Thank you.
October 14, 2015
Good Services
Finally received 12 Months worth of ADVANTIX II that package wasn't crushed by the shipper or USPS.
Somebody gets a thumbs up!
By missnancye
September 10, 2015
flea advantage
Have used for many years, reliable. Have three pets use on all three.
By borntoshop
July 21, 2015
Great price
I've been using this product for years now and I love the dependability. Works great on both of my Shorkies.
By Daniela
March 25, 2015
Review for 12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)
Product is great as it not only deals with fleas but ticks as well. It also works well after the 30 days incase you forget to apply it on time.
By Juliek
Ocean Shores, WA
March 17, 2015
This stuff works great for sandfleas
We spend time on the beach with our dogs and woulod have to spend time dealing with sand fleas after a walk there. After trying several different flea and tick products, we were still having problems with sandfleas on our pet dogs. We found that K9 Advantix II has been the only product we have used that actually repels the darn things. The dogs are so much more comfortable now, since sand fleas were our worst and most persistent pest problem.
By cwlyip
January 27, 2015
The best online pet store ever
This is my second time to purchase products in EntirlyPets. Best experience ever.
By Gitanjali
January 27, 2015
Need more specific weight categories
This product does work. However it is not very weight specific. For dogs just over 20 lbs, this tube won't work and the next weight category is very high. So I use 2 of the teal tubes. For my great danes I use the one above 55lbs. But they are probably way over 100lbs. So I have to use other tick and flea precautions in addition. It's a good product but if it could have a few more weight categories rather than 3 very wide ones - would be more effective.
By chicken
August 18, 2014
Great Purchase
Very pleased with the way the K9 ADVANTIX works on my dog would recommend it.
By Heather
Dallas, TX
August 4, 2014
Excellent Flea/Tick Preventive
We consider this the best all-around product. We have used it successfully for a couple of years with complete success.
By agiltiysheltiemom
June 26, 2014
Effective flea and tick control
Advantix II seems to be the best available product for flea and tick control available. Some of the newer products seem too dangerous. Frontline is no longer effective enough. Entirely Pets always has the lowest price for this product, especially when you can find a sale.
By Mary311
Atlanta, Ga
June 12, 2014
Only Flea and Tick Prevention I Use
This keeps my 2 small dogs tick and flea free! When I do find ticks, they are dead. Love Entirely Pets for great prices and fast shipping.
By RalfAvery
San Diego, CA
March 20, 2014
Well Satisfied!
Product used in inland Southern California on a Bichon Frise. We have been using Advantix II for several years. It's effective. Never see a flea. Rarely a tick. Fast service from Entirely Pets.
By Doxie M.
Stockbridge, Georgia
October 29, 2013
K9 Advantix II
I have been using this product for three years. It really works well on fleas and especially our nasty Georgia ticks. Entirely Pets has a great price and the shipping is extremely fast.
By TommieM
Gainesville, FL
September 28, 2013
Best topical for ridding pet of fleas and ticks
I have several longhaired Shih Tzu dogs. It only takes one stroll outside to pick up a few fleas and even ticks. I have used several different brands of topicals but none compare with Advantix. Both pests are quick to die out and it keeps the young fleas and ticks from developing into biting adults.
By StarIrinaSakura
Modesto, CA
August 1, 2013
Life Saver
When I first got my dog I was unsure of what to use. After a while, I thought I didn't need to have any type of insect protection for him since he was indoors, but what I didn't know was that my mom loved to garden and that led to her bring fleas into the house. I was so frustrated every time I found a flea on him. Granted we caught it early enough and bathed him in flea killing shampoo so that it didn't spread so much, but my goodness after the 5th time I had had it. I ordered this product and have not seen a flea on him once. It's easy to apply. Bathe dog, put a couple drops along the back, and he's good to go! My area has tick as well. I've gotten him the Lyme vaccination, but this reassures me that he's be protected. Love this product!
By Shar
Where ever we park
July 20, 2013
Just what I needed!
Product was received quickly, very smooth transaction, would buy from Entirely Pets again! Have used K9 Advantix for years with fantastic results.
By sweet
July 15, 2013
Review for 12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)
I tried others. This works the best! I recommend this product!
June 8, 2013
Review for 12 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)
Product is easy to apply & it works great.
Spring Hill, Fl
April 15, 2013
Works well
Use it because it fights mosquitos. Our pet had heart worm when we rescued her from the ASPCA 10 years ago.
By Lennie
New York, NY
March 20, 2013
K-9 advantage
I honestly love this product, I've used it since I got my dog Romeo at 3 months of age . I am thankful I did not have to try different brands to find the one that would work best for him. Besides being an effective product it's also very affordable and harmless for my dog.
By Lufta848
March 19, 2013
Top purchase
We and our dog can relax now. Ticks and fleas are behind us. Thanks for your good product.
By Griffy106
March 7, 2013
Great product really works
great product, no problems using it on my dogs. I have never had a flea or tick problem in the 5 years I have been using it.
By Sandy
March 6, 2013
Great product!
This product is great! It lives up to it's claims.
I always buy it for my family member on 4-feet.
By hbp
Northern Virginia
December 5, 2012
Great product for flea and tick
We have been using Advantix II to prevent fleas and ticks on our dog since he was a puppy. It is very effective and is the one product that doesn't cause him allergic reactions.
By Ames
October 23, 2012
Best for Poms
I have 4 poms and with all that hair and live in the South. I have been using K9 Advantix for 7 yrs. and it seems to be the working just fine for us.
By Africa
Eaton, IN
October 23, 2012
great service
You are a great company! All my dogs approve!!

Questions and Answers

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4 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)4 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)Reg price: $64.99
Sale price: $49.99
6 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)6 MONTH K9 Advantix II TEAL for Medium Dogs (11-20 lbs)Reg price: $88.99
Sale price: $67.99
4 MONTH K9 Advantix II RED for Large Dogs (21-55 lbs)4 MONTH K9 Advantix II RED for Large Dogs (21-55 lbs)Reg price: $64.99
Sale price: $49.99
6 MONTH K9 Advantix II RED for Large Dogs (21-55 lbs)6 MONTH K9 Advantix II RED for Large Dogs (21-55 lbs)Reg price: $88.99
Sale price: $67.99
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