K9 Advantix II for Dogs - Large Dog (21-55 lbs), 4-Pack

K9 Advantix II for Dogs is a once-a-month topical flea control product for dogs that provides protection against fleas. You, as a pet owner, can feel confident that K9 Advantix II for Dogs  works against fleas, fast.

Bayer HealthCare K9 Advantix II for Dogs - Large Dog (21-55 lbs), 4-Pack 724089616265
5 stars
  • canine
Description Price Qty
K9 Advantix II for Dogs - Large Dog (21-55 lbs), 4-Pack
Product #: T-PET533
List Price: $79.52
You Save: $25.05(32%)
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K9 Advantix II for Dogs is a once-a-month topical flea control product for dogs that provides protection against fleas. You, as a pet owner, can feel confident that K9 Advantix II for Dogs  works against fleas, fast.

What Advantix Does:
Advantix is the fastest topical solution, proven to stop fleas from biting in 3 - 5 minutes after application. Advantix kills 98-100 percent of fleas within 12 hours of initial application. In addition, one convenient treatment lasts for up to one month.You don't need to use another flea control. Advantix kills fleas before they lay eggs, so their life cycle is broken. And because it kills flea larvae within 20 minutes of contact, you don't need to use an insect growth regulator (IGR). Advantix also inhibits larval development in your pet's surroundings by more than 99 percent. Once a month, the pre-measured dose is applied from an easy-to-use applicator tube. Advantix then spreads naturally on the surface of the pet's skin, with the help of movement by your cat or dog. In a matter of hours, the fleas are gone. It's as simple as that!  Advantix is water resistant and continues to work even when your pet gets wet. Advantix keeps killing fleas after shampooing, swimming or exposure to rain or sunlight

3 Key Features:

  • 5-way repel & kill pest protection for dogs – fleas, ticks, mosquitoes, biting flies, lice.
  • Repels & kills all life stages of fleas and prevents fleas on treated dogs from infesting your home.
  • Waterproof.

Length Of Effectiveness:

Under normal conditions, the product is effective for a 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 (7) days. After flea control is attained, return to a monthly re-treatment schedule.

Size Weight Color
Small Dog 10 lbs and under Green
Medium Dog 11-20 lbs Teal
Large Dog 21-55 lbs Red
Extra Large Dog over 55 lbs Blue
UPC 724089616265
Size 4 Pack
Color Options N/A
Size Options N/A
Brand K9 Advantix II
Manufacturer Bayer HealthCare

Suggested Usage:

Topical prevention and treatment of ticks, fleas, mosquitoes, biting flies and lice for monthly use on dogs & puppies 7 weeks of age and older  DO NOT USE ON CATS.

Application Instructions:

Apply the entire contents of the tube evenly to two to three spots on the top of the back from the shoulder to the base of the tail. Monthly application.

Please not that Bayer recommends the use of an Oatmeal Shampoo to protect the effectiveness of the product after bathing.

Active Ingredients:

8.80% Imidacloprid; 44.00%  Permethrin,; 0.44% Pyriproxyfen

Other Ingredients:

46.76% other ingredients

Works the best

5 stars

I buy this for my two dogs and it works way better than the other popular brands. Will continue to buy for a long time from this site because their prices are so good!

Review by Zee on 5/21/13


5 stars

This is the best! You can trust Bayer and K9 Advantix II. Have not had any problem at all since switching to this over a year ago.
Have used the other best selling product with poor results ending with a trip to the vet on 2 different occassions with extreme problems and costly and extreme remedies not to mention the suffering my dog went through.

Review by Critt on 9/29/12

Great Product!

5 stars

I have a two year old German Shepherd and we have been using K9 advantix since she was about 6 months old and never had a flea problem! Before K9 advantix, I was using Vectra 3D that i bought directly from the vet, which cost about $20 per month and thats when she was under 30lbs. After doing research, I decided to switch to k9 adavantix because its the only other flea/tick medication that prevents against mosquitos which are a big problem here in Texas. As long as this prodcut keeps working, I will keep buying! The value of the prodcut from this site is great! Its about $20 cheaper then regualr pet stroes and the orders come on quickly!

Review by Anny on 8/10/12

The best flea/tick topical preventative

5 stars

We've tried the non-branded, less expensive products and were thoroughly disappointed with them. K9 Advantix II consistently provides flea/tick protection for a month. Both our dogs get Advantix II every month and we won't be tempted to try a cheaper substitute!!

Review by Ollie's mom on 8/3/12

Works Great

3 stars

The best flea deterrent I've found. Easy to order and ships very quickly.

Review by Adam on 8/3/12

works great in rural missouri

5 stars

We found that the other flea products no longer worked for us. i went to our local pet product stoe and the sales person told me he found that many people in our area were having alot of flea problems even after treating their pets. I decided to try Advantix II and it works great- not a single flea or tick since applying it. The other flea drops also make our dogs a little sick for a couple days but this doesn't. Highly recommend!

Review by Lisa on 8/3/12

Great Product !

5 stars

Been using this product for quite sometime and seems to work the best . I've yet to have a problem and use it year round on all my dogs. PSCPets is the cheapest I've found and the service is top notch , thanks !

Review by FEETDOWNHONKERS on 8/3/12

Love this product!!!

5 stars

This is the only product that keeps the fleas off our dogs. I have tried other name brand products and My dogs still scratch and I see fleas on them. This product does what it claims!!

Review by Megan on 8/3/12

K-9 advantix ll

5 stars

it is the best flea product hands down!

Review by bonni crumpler on 7/6/12

Fleas and Ticks are no more

5 stars

This summer (2012) is going to be one of the WORST flea and tick seasons ever. Not a concern for my dogs as we use K9 Advantix II paired with a brewers yeast tablet everyday.

Review by Daniel on 6/18/12

Repel those fleas and ticks!

5 stars

Works great! No more worrying about those nasty pests!

Review by Gina on 4/29/12

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K9 Advantix II for Dogs - Large Dog (21-55 lbs), 4-Pack 0 out of 1 5 based on ratings. user reviews.