Prescription needed
We'll collect your vet's information at checkout to verify the prescription.


Usually shipped in 1-3 business days.* Learn more
We'll collect your vet's information at checkout to verify the prescription.
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Usually shipped in 1-3 business days.* Learn more
$30 max savings.
* SAME-DAY FLEA CONTROL: These tick and flea drops for dogs kills fleas on dogs within 12 hours of application, helping provide relief from active infestations.
* REPELS & KILLS THROUGH CONTACT: K9 Advantix II kills and repels fleas and ticks through contact, so they don't have to bite your dog to die.
* VET-RECOMMENDED*: K9 Advantix II for Dogs is vet-recommended* flea, tick, and mosquito treatment and prevention without a prescription.
* EASY-TO-APPLY MONTHLY PROTECTION: This convenient flea and tick topical is easy to apply, and no prescription is needed.
* WATERPROOF FLEA DROPS: K9 Advantix II for dogs is waterproof after 24 hours of application, so it continues working after bathing, swimming or walks in the rain; it stays on and won't rub off.
We have had other flea and tick formulas, but we got this specifically because it also offers a mosquito repellent.
works very well
Works well and easy to apply.
I have done older rescues that are sensitive to most flea and tick treatments. One gets seizures from many of these products . K9 Advantix has never caused a reaction in any if my five dogs. Highly recommend. Works well. No fleas or ticks in any if these guys since using this product.
My dog had a pretty good batch of fleas. We were pulling five to ten of them off him each day. I gave him one tablet and have yet to see another flea after more than ten days.
I've been using this for at least 8years every summer on my sweet bulldog. I've had zero issues with fleas in the house or on my pet.
I tried other flea and tick solutions and i was still finding ticks on my dogs. I have been using Advantix for over 15 years on my Springer Spaniels and it works.
K9 Advantix® brand to kill and repel fleas, ticks and mosquitoes. With one easy-to-apply topical treatment, K9 Advantix® II works all month. Wouldn't use anything else.
I love that it not only kills fleas and ticks but eggs and larvae… and mosquitos and lice… great… my sister uses it all the time…
I love allivet’s pricing and free shipping. I order all my pet medicines from allivet.
ME AND MY DOGS JUST LOVE THIS PRODUCT NOT A SINGLE FLEA SINCE WE STARTED USING IT AND PET MEDS MAKES IT SI EASY TO ORDER MORE LOVE IT
I ordered K9 Advantix II because my vet told me that it is a great product
I have found this works the best for my dogs.
No complaints it works as expected.
Works great and LESS expensive that most!
Good price, ease of ordering
I've been using this faithfully on my Shi-Poo since she was a puppy. She is now 8 and never has any pest problems. Works for me!
Advantix II works best for my dog. Living in South Florida, my Buddy is exposed to fleas and mosquitoes more that other parts of the country. It works here, it will word anywhere.
The best price I could find online. Happy with buying experience.
Never had a problem with Advantix. I feel secure as a multiple dog owner.
I like this flea and tick medicine out of all the stuff on the market.
We’ve been using this with the girls for years.
Keeps ticks and fleas away!
I have been very happy with this product
best price for mail order; quick delivery; very nice customer service.
I compared the protection provided by Advantix II with Frontline, and Advantix II offers much more protection at a lower cost — both of which are important. Even with the 20% off promo Frontline offered, this is by far the better buy. After all, saving money IS one of the main reasons we shop at Allivet.
ALWAYS GREAT PRICES AND SERVICE...Thank you!
I love Allivet pharmacy and I order all Cocabean medicine here.
Works awesome
Very good
This product works quite well for my little Zoe. Delivery of the product is fast.
I have used this faithfully on my little 12 lb Shi-poo and she has never had a problem with any bugs. She also gets a Sentinel Spectrum chew every month as well.
This product was recommended so we are trying it out!
This is the best price I’ve seen in quite a while. I feel this product is the best for my puppy dogs
My baby is a little over 5#. K9 Advantix works the best for him. I want only the best for him and Allivet provides that for me.
I like this product, but lasts more like 3 weeks
Helps my pet.
good product, awesome price
I have five dogs and this is a good price
Lowest price
It works & this is great price !
1/2 off sale! My dogs use this every month!
K9Advantix II keeps fleas and ticks off monthly. Works great!
Great !
Works well, mainly we use it for Mosquitoes & Ticks for our dog.
Good prices
Very satisfied !
I always buy thru Allivet- great service, prices and products. My dogs has been on this for 9 years - works as advertised.
It's just the best
The best price I have ever got
We have fleas, ticks & mosquitos in Michigan and this works
Did some research and this product was highly recommended by veterinarians. The price was the best on Allivet autoship!
It works!
I wish this worked on humans. Once a month on my dogs and it works
Best price available.
nice price
This works and is the best out there.
Best prices
Efficient n cheaper
I use K9 Advantix for all my dogs because it is safe for their health and stops ticks and mosquito bites very well. I once bought another brand from a pet store, and my poor dog started shaking all over. I had to wipe him off with a wet, soapy towel right away to get as much off as possible. This is the only brand I will use.
Fast service. Best price.
works for me
works for me
Help my dog from allergy
I've been using this product for years with no issues. I hate how it makes the dogs gross and greasy for a few days but it is worth knowing I won't have to worry about ticks for a few weeks.
about 40% less than my vet was charging me for exact same 6 month supply. Although my vet prices for visits and vaccinations are very reasonable, I see now where they are making up the difference by overcharging for same products I purchased here. I felt taken advantage of when I found out how much cheaper it is to order from Allivet at the advice of my co-worker
I love the low prices at Allivet. I shop here all the time.
Works well to keep the ticks off my dogs even during the summer.
Flea meds are expensive. I've tried to cheap ones and they don't work. K9 Advantix does and the prices here are wonderful!
Works well to keep the ticks off my dogs even during the summer.
Good price , good product, good service from allivet very simple site for old lady!!
Great price
this is a great product if you have a mosquito problem in addition to those darn ticks.
Great price!
Works great!
my friend recommended this product, said it works very well
Great product! Works awesome even when needing to bathe my dogs repeatedly during the month between applications.
K9 Advantix II is a definite winner. It protects better and I had a German Shepherd allergic to Frontline, but not the Advantix
lowest prices
We live in the woods, We always have plenty of fleas and ticks. This product works great. I never find them in the house or attached to our dogs.
I have to be careful putting these kinds of products on our Yorkie. She's tiny. No issues with a reaction, since she is so small. Great product.
quick ordering process and competitively priced
We've used this product on our animals for years with very positive results.
Quality of service and easy access to customers.
My pup is a flea magnet! Gotta keep him on a regular regimen of flea control.
I've been ordering K9 Advantix II from Allivet for several years. We've not had any problems with fleas or ticks. The product is easy to use and effective. I use Allivet for all my animal health needs. The service is top-notch and they have frequently gone the extra mile to ensure my satisfaction.
Always used K9 Advantix, upping to Advantix II
I do like the complete protection it gives Titan and I like the topical treatments much better than the oral. We go RV camping all the time and have never had any issues with fleas, ticks or mosquitos....
I love the prices at Allivet!
Awesome stuff! Never causes issues and dogs are relieved!
Been ordering from Allivet for all my pet needs
Great price. Great customer service.
They are the best, saved me $65/ month in seizure meds for my Golden
Great price- free delivery
Advantix keeps tics and mosquitos from attacking my dogs. This is also safer than lesser-known brands as some dogs may have seizures with tic medicine-My dogs haven't had any with this brand.
This product is the best one for my dogs. It protects them from flees and ticks so well I don't have to worry anymore, They play and sleep some much better I don't have to worry when they play outdoors inside my home fence. I am very pleased with this product. I love my two dogs very much and am very much satisfied with this protection against fleas and ticks. Thank you so much and have a good day!
Fantastic website
Works great for my Maltese
works well with my dog
The best on the market!