

K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 6-Monthly Treatment
Key item features
- Comprehensive Protection: K9 Advantix II Large Dog 30-day treatment & prevention protects dogs 21-55 lbs. from fleas, ticks, mosquitoes, biting flies, and lice.
- Fast-Acting Formula: Kills fleas within 12 hours of application, providing quick relief for your dog.
- Vet-Recommended: This formula kills and repels on contact, ensuring fleas don't have to bite your dog to die.
- Easy Application: The topical treatment is simple to apply, fragrance-free, and waterproof after 24 hours.
- No Prescription Needed: Easily accessible without the need for a vet's prescription.
- Indoor and Outdoor Use: Effective for both indoor and outdoor dogs, ensuring comprehensive pest protection.
- Age and Weight Requirements: Suitable for dogs that are at least 7 weeks old and weigh between 21-55 lbs.
Specs
- Weight range21-55 lb
- Protection period8-Month
- Result time12 h
- FeaturesWaterproof
- Parasite typeTick, flea, Mosquitoes, Flies, Lice
- 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 shipping
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
Medication Information
Hazard Precautions
The product label states: 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.
People with known hypersensitivity to benzyl alcohol, moxidectin, or imidacloprid should administer the product with caution.
IF IN EYES: Hold eyelids open and flush with copious amounts of water for 15 minutes. If eye irritation develops or persists, contact a physician.
IF SWALLOWED: Call poison control center or physician immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by the poison control center or physician.
IF ON SKIN: Take off contaminated clothing and wash affected skin immediately with plenty of soap and water. Call a poison control center or physician for treatment advice. In case of allergic reaction, contact a physician.
Do not allow children or other animals to come into contact with treated animals until the application area is completely dry.
Disposable gloves are not required (not mentioned on label), but they may be considered when applying this medication.
Must NOT be used on cats or in households with cats. Permethrin is toxic to cats.
Description
Agent to Treat & Control Fleas, Ticks, Mosquitoes, Biting Flies, & Lice; Insect Growth Regulator
Storage Instructions
Store unused product in a cool, dry place. Protect from freezing.
Keep away from children and other animals.
Medication Usefulness
The combination of imidacloprid, permethrin, and pyriproxyfen (K9 Advantix® II) is licensed by the US EPA (Environmental Protection Agency) for prevention and treatment of fleas, ticks, mosquitoes, biting flies, and chewing lice for monthly use on dogs and puppies 7 weeks of age and older. You and your veterinarian can discuss why this drug is the most appropriate choice.
Indications
Animal Health Concern
Directions
Dosage
Instructions
Fabric Care Instructions
Warranty
Warranty information
Ingredients
Ingredients
Imidacloprid, Permethrin, Pyriproxyfen
Active Ingredients
Imidacloprid, Permethrin, Pyriproxyfen
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 1,919 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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