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🐾 Protect your big buddy fast — because they deserve the best!
K9 Advantix II Extra Large Dog is a vet-recommended, topical flea, tick, mosquito, biting fly, and lice treatment designed for dogs over 55 lbs. It kills fleas within 12 hours and repels pests on contact, offering waterproof, fragrance-free protection for 30 days without the need for a prescription.













| ASIN | B07NX2VWYC |
| Active Ingredients | Imidacloprid, Permethrin, Pyriproxyfen |
| Age Range Description | 7 weeks and older |
| Allergen Information | Allergen-Free |
| Brand Name | K9 Advantix |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,558) |
| Dog Breed Size | Large |
| Global Trade Identification Number | 00724089114945 |
| Included Components | None |
| Item Form | Topical |
| Item Type Name | Topical |
| Item Weight | 23 g |
| Manufacturer | K9 Advantix |
| Manufacturer Part Number | 90204386 |
| Model Number | 90204386 |
| Scent Name | Unscented |
| Target Species | Dog |
| UPC | 724089114945 |
| Unit Count | 1 Count |
| Volume | 4 Milliliters |
B**K
Only been a few days but I can tell it’s powerful. My husky hangs outside in the middle of florida theirs all sorts of everything here. Other non prescription medicines were too weak for my big dog. He’s 75 pounds and within 1 hour of applying it along his back, the fleas started reacting. The first day he was scratching quite a bit but now it seems he has relief.
K**A
This product works great on my dog when others I tried didn’t.
K**Z
Estaba preocupada por los reviews pero funciono bien con mi perro
D**L
I have bought this product many, many times and will absolutely continue to do so for my girls Ruby and Jade. If you live in Texas, you already know the bugs here don’t play around — especially the mosquitoes. These things keep all the thugs off my dogs. Fleas, ticks, mosquitoes… not today. 🚫 Ruby and Jade have zero issues while using this — no reactions, no irritation, no problems at all. It’s easy to apply, works exactly like it’s supposed to, and gives me peace of mind all summer long when the bugs are at their worst. I’ve tried other products over the years, but I keep coming back to this one because it’s reliable, effective, and consistent. When something works this well and keeps my dogs comfortable and protected, I’m sticking with it. If you’ve got dogs and live in a buggy area (or just want the creepy crawlies evicted), this is a must-have. Ruby and Jade approve 🐾🐾 — and so do I!
C**N
Works
Trustpilot
1 month ago
1 month ago