

🐾 Protect your pup like a pro — fast, effective, and fuss-free!
K9 Advantix II Large Dog is a vet-recommended, topical flea, tick, mosquito, biting fly, and lice treatment for dogs 21-55 lbs. It kills fleas within 12 hours and repels pests on contact, preventing bites and infestations. The fragrance-free formula is waterproof after 24 hours and requires no prescription, making monthly application simple and reliable for indoor and outdoor dogs.













| ASIN | B00N7DEBN4 |
| Allergen Information | Allergen-Free |
| Batteries Included | No |
| Best Sellers Rank | #50,234 in Pet Supplies ( See Top 100 in Pet Supplies ) #58 in Dog Flea Drops |
| Breed Recommendation | Large |
| Color | Large Dog only |
| Customer Reviews | 4.4 4.4 out of 5 stars (16,001) |
| Date First Available | 20 November 2014 |
| Item Form | Topical |
| Item Weight | 40.8 g |
| Item model number | 86314940 |
| Number of Items | 1 |
| Pet Life Stage | 7 weeks and older |
| Pet Type | Dog |
| Product Dimensions | 2.54 x 11.11 x 12.07 cm; 40.82 g |
| Quantity | 1 |
| Size | 2 Pack |
| Specific Uses | Parasites |
| Storage Information | Store in a cool, dry place inaccessible to children and pets. Protect from freezing. |
| Volume | 5 Milliliters |
| batteries required | No |
C**N
Very happy with the results every time. I have used this for years on my dogs and never see fleas or ticks on them! I'll never use anything else.
M**E
I like this brand and the price I use to give my dog Nexgard along with the brand for heart worm It became costly so that’s why I switched It works in keeping the fleas away plus mosquitoes. No smell
A**R
My dog was on a prescription medication before this. I had to stop her previous medication because it was out of stock for a while and when it was restocked, the price skyrocketed to $250 for a 6 month supply instead of the usual $120 that it was prior. There was a new generic version of her prescription but after reading the reviews on that, I didn’t want to risk my dog’s health. During that time of her not being on any preventative, we ended up with a flea problem in my area which we never had before. Since the fires, a lot of wildlife has been dropping by in my neighborhood and with wildlife comes fleas just hitching a ride with them. We fell victim to an infestation in our backyard and surrounding areas. I panicked and tried the holistic approach for months with DE, changing my dog’s diet, essential oils, etc to no avail. I had to try something because my dog is old and I really didn’t want to stress her by taking her to the vet for yet another prescription (which all had extremely negative adverse effects after doing plenty of research). I decided to try an OTC flea treatment and it was between this one and frontline. After doing more research, I opted for Advantix II since it was more effective than frontline (for my area). So glad I did because fleas were gone within a day. My dog has been on this for a year now and so far it is working. I did find a flea on her the other day right after we got back inside from our little walk and was able to grab it. I put it in a ziplock bag with a piece of my dogs shedded fur just to see if the treatment was still working since it had been 26 days since I used Advantix and within 2 hours of that flea crawling on her fur in that bag, it was dead. So I know for sure that this medication is working and working effectively at that. She was groomed two days prior to me finding a flea on her as well (she had a waterless bath and is wiped down with her dog wipes daily) - the bath and wipes didn’t minimize the effectiveness of this flea medication which is a huge plus! What I’ve learned throughout this whole process is that no treatment is going to immediately kill or prevent fleas or ticks - not even prescription medication - Advantix has saved me hundreds if not thousands of dollars on prescriptions and it’s still as effective as a prescription. It’s a win - win in my book and I will continue to use this year round to keep my dog protected.
H**N
The product we received was manufactured in 2022 (lot E223051A). While they say it doesn't expire, it does lose efficacy. That could explain why it's not working as quickly as other lots.
2**S
Great product. No ill effects. Easy to apply. It's not flea/tick season so effectiveness for those unknown. Dog is health and happy. Typical English Foxhound. Shipped directly with two applications. Reputable alternative to prescription systems. A good value for a reasonable price.
Trustpilot
2 months ago
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