

K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 1-Monthly Treatment
Key item features
- K9 Advantix II Large Dog 30-day treatment & prevention protects dogs 21-55 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
Specs
- Weight range21 lb - 55 lb
- Protection period8-Month
- Result time12 h
- FeaturesWaterproof
- Parasite typeFlea, Ticks
- Animal typeDog
Reviews summary
- : Simple application process with quick results.
- : Offers protection against ticks, fleas, and other external parasites.
- : Protects against most ticks, with some exceptions.
- : Offers lower cost compared to similar products.
- : Effective for some, but potency varies over time.
Free 90-day returns
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About this item
Product details
- K9 Advantix II Large Dog 30-day treatment & prevention protects dogs 21-55 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
Specifications
Weight range
Protection period
Result time
Features
Indications
Animal Health Concern
Directions
Dosage
Instructions
Ingredients
Ingredients
Imidacloprid, Permethrin, Pyriproxyfen
Active Ingredients
Imidacloprid
Warnings
State Chemical Disclosure
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Customer ratings & reviews
Reviews summary
- : Simple application process with quick results.
- : Offers protection against ticks, fleas, and other external parasites.
- : Protects against most ticks, with some exceptions.
- : Offers lower cost compared to similar products.
- : Effective for some, but potency varies over time.
Customer images






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Showing 1-3 of 1,915 reviews
Verified Purchase
Advantix II
I have been using the Advantix II since its inception. Because we live in a Forest with wildlife abound, this product is essential for keeping our canines free of fleas %26 ticks. I use it year round as our area is never cold enough to kill all pests. (This product is also recommended by our Veterinarian)
Amazing product really works
I've used frontline plus four years with good results until this year. After trying several other products that hasn't worked I had to find something that did. My yorkie has flea allergies and was constantly scratching and had to be put on predizone! I went online and found the best rated flea product was k9 Advantix II, within 12 hours of application I only found one dead flea on my yorkie and none on my sheltie! Dogs are happy and mamas happy. I redose them every three weeks as the box directions reads you can. This seams to have put a stop to our flea problem! And my yorkie no longer needs prednisone for flea bites. Hope it works as well on your pets.
Verified Purchase
Recommend
My groomer recommended the K9Advantix because I was having no luck with the oral flea treatment. I live i a very dark wooded area and it has been extremely wet this spring. Fleas are thriving. But my dogs so love to run in the yard and especially while I am in the garden. In less than two weeks my two small dogs and the house are flea free. VERY PLEASED.
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