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🐾 Stay ahead of pests, keep your big buddy unstoppable!
K9 Advantix II XL is a vet-recommended, fragrance-free topical treatment designed for dogs over 55 lbs. It kills and repels fleas, ticks, mosquitoes, biting flies, and lice within 12 hours, providing waterproof protection after 24 hours. Easy to apply monthly without a prescription, it safeguards your dog from pest-borne diseases and discomfort, ensuring your furry friend stays active and itch-free.













| ASIN | B00I0BWNUG |
| Active Ingredients | Imidacloprid, Permethrin, Pyriproxyfen |
| Age Range Description | 7 weeks and older |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | #62,658 in Pet Supplies ( See Top 100 in Pet Supplies ) #74 in Dog Flea Drops |
| Brand | K9 Advantix |
| Brand Name | K9 Advantix |
| Customer Reviews | 4.4 out of 5 stars 12,928 Reviews |
| Dog Breed Size | Large |
| Included Components | 2 |
| Item Form | Topical |
| Item Type Name | Topical |
| Item Weight | 9 g |
| Item form | Topical |
| Item volume | 8 Milliliters |
| Item weight | 9 g |
| Manufacturer | K9 Advantix |
| Manufacturer Part Number | 86314819 |
| Model Number | 86314819 |
| Scent | Unscented |
| Scent Name | Unscented |
| Target Species | Dog |
| UPC | 724089060983 |
| Unit Count | 2.0 Count |
| Volume | 8 Milliliters |
| Warranty Description | Bayer K9 Advantix II Flea, Tick and Mosquito prevention for XLarge Dogs, over 55 lbs, 2 doses |
A**R
Rottweiler approved
Amazing. My Rottweiler goes to the dog park everyday and not a flea on him…
F**N
Mosquitoes repellent
So far so good. My area has a trally dense population of mosquitoes because are next to a pond. I was worried about my dogs getting sick. The day I put this on them the mosquitoes would fly around them but didn’t get to land on them. I was very pleased to see this. It’s easy to up on, there doesn’t seem to be an odor. I will update if my opinion changes but so far we will stick with this.
I**P
Great product for small dogs
My mom lives out in the rural sticks. Her herd of small dogs has thrived out there for years, usually with no attention paid to fleas and whatnot until it becomes a problem. The solution was always a flea bath, maybe some Adams spray, and they are good to go until the next time. I'm not sure which is most to blame, but between the recent hot weather and the addition of ~20 chickens to her zoo (which in turn brings in unknown numbers of flea and tick covered rodents to get into the chicken feed and predators to try to get chickens), the fleas are thriving outdoors. ....and after many years of inconsistent flea protection they were thriving on her dogs, who primarily live indoors. Now, I am working to combat an active flea infestation in her house. The first application of this stuff has the dogs happier and not scratching as much. With the help of some 1ml oral syringes, I was able to turn one XL dog dose into 4 XS to Medium doses with just over a Medium dose to spare. That makes it pretty darn cheap for a product that works really well. It is an active infestation, so they are bound to get some fleas here and there and scratch a bit. It comes with the territory. Until the fleas are knocked down outdoors and until their life cycle is broken indoors, there will be fleas. Fighting an indoor flea infestation WILL take 6 weeks or a bit longer. I can't speak for how consistent this product is, as most products can have a dud here and there, but I have serious doubt with regard to all the people giving negative reviews because their dog got a few fleas after this product was applied. I don't know their back story, but fleas don't just sprout from the air and ticks are unlikely to fall off in a day. Odds are they have a yard and/or house full of fleas (just like I'm dealing with) and are expecting this to work miracles. It won't. Also, could be that they applied it to the dog's fur rather than on the dog's skin where it can be adsorbed. First off, CONTROL THE WILD FLEAS. Use an IGR in and around your house, and also get the proper microencapsulated pesticide for your usage case. If you have no cats around, permethrin based is great - like Onslaught Fastcap, Bifen I/T, or whatever indoor bug spray from the local hardware store. Wet down every bit of flooring, every baseboard, every access point. Let it dry before you let anyone/anything back in. Repeat every 2 weeks. If there are cats, use something cat safe like some hippie plant oil based garbage that needs to be applied every few days or do your own research and find an effective product. Get some insecticide granules and a spreader for your lawn. If cats, use Sevin or some hippie formulation (or whatever). If no cats, you have more options including Bifen L/P, Spectracide Triazicide, Talstar PL -- or even a cat-safe hippie formula if you just want use a less effective product and apply it way more often. Always wet the granules down after spreading. There is rarely a magic bullet when you're fighting nature.
A**R
Only last three weeks
The drops were great, but only last like three weeks, but my dogs do like to swim in our pool looking for an alternative
S**S
Stays on.
Works quite well.
Trustpilot
2 weeks ago
4 days ago