K9 Advantix II for Dogs PRODUCT REVIEWS PAGE 2 OF 7

Advantix is one of the most trusted names in flea and tick protection, and for good reason! K9 Advantix II is an easy to use and effective product, beginning to work within 12 hours and lasting for 30 days.

Options Available: Green, 10 lbs. and under, 4 Month Supply Teal, 11-20 lbs., 4 Month Supply Red, 21-55 lbs., 4 Month Supply Blue, 55 lbs. and over, 4 Month Supply Blue, 55 lbs. and over, 6 Month Supply Green, 10 lbs. and under, 6 Month Supply Red, 21-55 lbs., 6 Month Supply Teal, 11-20 lbs., 6 Month Supply Green, 10 lbs. and under, 12 Month Supply Teal, 11-20 lbs., 12 Month Supply Red, 21-55 lbs., 12 Month Supply Blue, 55 lbs. and over, 12 Month Supply

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Rated 4.5 out of 5 by 615 reviewers.

  • Best out there
    I have tried many different brands and always there was a stray tick or flea found. When I began using Advantix II - to date I have never seen, found or had to remove a tick or flea from any of my four dogs ( all ranging in different size/weight). A product that truly delivers. by on 02/25/2015
  • K9 Advantix II Works
    We live in a wooded area with many squirrels and with two dogs that love to chase them, we have never seen a single flea on the dogs. As far as ticks go, with many deer in the area, too, IF a deer tick or seed tick finds its way to the dogs, it soon dies and falls off. by on 02/13/2015
  • Excellent product and price
    K9 advantix II is great and PetCareRx is the place to buy from. Great deals and fast shipping. by on 02/12/2015
  • It works!!!
    Used another popular product for several years and had ongoing problems with skin allergies, hot spots and not being able to get ahead of the fleas, just did not seem to be effective. Also in the area of application the coat had changed, was greasy. Within days of using Advantix for the first time, I noticed a difference, the fleas disappeared. This is the second year that we have used this product and we have none of the same problems...it works against the fleas and we are able to easily address the itching due to allergies...we will continue to use only this product. Thank you by on 02/11/2015
  • So far I have not seen any fleas so the product must be working.
    I like the product and it must be working...I have not seen any fleas so the product does work I would recommend this product. by on 02/10/2015
  • Great Product--Too Expensive
    We've used this product for years and it works great. Very effective. Every time I order it (every 6 months) the price keeps going up and up and up. It's getting ridiculous, even at PetCareRx! by on 02/06/2015
  • great product
    the only product that allso reppeles moseitos and allso vet recomended by on 01/23/2015
  • I have two dogs and I give then the dosage once a month. It is a very good roduct. Easy to use and has been very effective on my dogs.
    A great product for ticks as well as fleas. Most other products do not work on ticks. I live in a wooded area and in the past before this product was used we had problems with ticks and well as fleas. Since using this product we have never hand any problems with ticks or fleas. by on 01/23/2015
  • This product has good protection
    I used this product for passed few years & gives my dog good prtection.I have a open field behind the house & deer rabies & other animals travel through my yard & my dog has had no fleas or ticks etc. I use it year round. by on 01/20/2015
  • This product works well
    I like to get free shipping and a promotional codes. That what makes me make a purchase by on 12/09/2014
  • K9 Great
    As usual a great product and efficient service. Thanks for helping save money too. by on 12/09/2014
  • Works on our dogs and on my cat
    We used Frontline for 4 months and the "kids" kept itching no stop. We switched to K9 Advantix II for our 10lb female and 25lb male dogs. And K9 Advantix II for Cats for our 15lb Siamese princess cat. In less than 12 hours all of the itching stopped completely. And last week (the day after Thanksgiving-Friday Nov 28, 2014) a very skinny young female chiuahuah showed up in our yard....absolutely covered in fleas (fleas 2x the size of a grain of rice! Gigantic fleas!).. seemed like a thousand or more! We bathed her and gave her a K9 Advantix II treatment. Less than 5 hours later, not a live flea to be found. This stuff is very effective!! by on 12/05/2014
  • Works great!
    I live in the middle of a forest in CT (near Lyme CT). My dog just had her annual check up and she's Lyme disease free for the 3rd year in a row! I'm always checking her if she bites a spot on her fur and I've never seen a tick bite her. by on 12/05/2014
  • Lots of Scratching
    Bubba is outside a lot and I think he was being bit by insects. He was always scratching. After taking Advantix for a few weeks, the scratching has stopped. He still takes his heart worm medicine that has some flea repellent. by on 11/21/2014
  • Good Choice
    I've been a Frontline user for years. But switched to K9 Advantage as Frontline wasn't helping with Flea. I put K9 on and after a few days the fleas were gone by on 11/12/2014
  • Good product
    Medication works for us. Only thing is my vet said to apply it every three weeks, not four, so it gets kind of pricey. Beats having ticks or fleas. by on 11/09/2014
  • Great for dogs Not so good for humans!!
    Easy to put on your dogs and works well! Wife will yell at you if you put it on your kids! by on 11/06/2014
  • This product works, but may irritate skin
    I order K9 Advantix II from Petcare RX regularly along with the Heartguard. The products are effective and we use them for our small dog.The reason for using Petcare RX is that supposedly the products are cheaper, and since we use them monthly, we like to save a few dollars. I have found the coupon codes provided by Petcare RX do not work when ordering. They are worthless, so if you have a coupon for the product, provided by Petcare RX, for your next order, do not think you are getting that discount on top of the prices on the order. Shipping is fast, product is excellent. by on 10/27/2014
  • We buy it from you all of the time..........
    The only problem I have ever had..........one of the tubes in this last box only had a little in it. I have used this for years and never seen this before.There was only a little drop in it.......I didn't know if I should use another one or not. I chose not too. by on 10/26/2014
  • Not for small dogs
    I've used this product on my bigger (over 50 lbs)dogs and had good results with no problems. It also seems to be working well for my 15 lb dog but he had a bad reaction to it- wasn't eating, lethargic, etc.for about 3-4 days. I won't be using this again on my small dog. by on 10/23/2014
  • Works great on Baby!
    My daughter told me that K9 Advantix II was the best flea and tick treatment....and she was right! It isn't the cheapest, but you can be sure that it will work. It's the best we've used on Baby ~ our 14 year old Rottweiler. by on 10/09/2014
  • Seems to be effective for fleas; hard to tell about mosquitoes.
    Have used for 2 months. Previously used Advantage II for flea control. However, switched to Advantix for protection against mosquitoes during summer. Think it helped with those, but can't be sure. Prefer Advantage II otherwise, because feel more comfortable with safety of ingredients. No adverse effects, however, with Advantix. by on 10/01/2014
  • Best product available
    I have tried several flea and tick medications and find that this one works the best for my dogs. Since I have been using K9, my dogs have had no fleas at all and only two ticks and they were dead ones. I just wish these medications weren't so expensive. by on 09/29/2014
  • Great product!
    We have three dogs and love the K9 Advantix II. We highly recommend it. It has kept our dogs flea free for years. by on 09/29/2014
  • Confusing name with K-9 advantage
    Ordered this by mistake needed K-9 Advantage. Not nearly as effective by on 09/23/2014
  • excelent product
    I have used this product for many years and it works great. by on 09/17/2014
  • great price
    I was willing to try product because of cost and amount received. this is only first month of use. seems to be working quite well by on 09/12/2014
  • Checks off all of protection needed.
    I selected this product so as to be sure that my loving pets are protected from everything that is harmful to them. It is easy to apply. by on 09/11/2014
  • Vary happy
    This web site offer the best price and great products will order all my dogs products here :) by on 09/06/2014
  • Product worth using
    Product works well, but my dog still does some itching. No signs of fleas though. by on 09/03/2014
  • Excellent product
    I've used Advantix II for several years on my cats and dogs. It works better than anything else I've tried. With the extra 20% it was cheaper at PetCareRx by about $8 than anywhere else online. Shipping was very fast. by on 08/30/2014
  • Awesome product for dogs!
    Great product for keeping flies off dogs. Very easy to use and only have to do it once a month. by on 08/27/2014
  • This product works!
    I have not seen one flea on my dog since we started using Advantix II on our dog. I am completely satisfied with this product. by on 08/25/2014
  • Great features
    Easy to use and it helps keep fleas and others from getting into the dog. by on 08/24/2014
  • PetCareRx IS VERY RELIABLE
    THIS PRODUCT IS INSANELY EXPENSIVE NO MATTER WHERE YOU LOOK. PetCareRx HAD IT AT THE MOST AFFORDABLE WHICH IS WHY I USE THEM. ONE OF THE TUBES WAS BROKEN AND PetCareRx REPLACED IT IMMEDIATLEY. GREAT CUSTOMER SERVICE AND PRICE ARE PARAMOUNT IN MY BOOK! by on 08/23/2014
  • The only one that works on our Wheaten Terrier
    Excellent price, fast shipping, totally satisfied with Pet Rx and avantix 11 by on 08/21/2014
  • GREAT Product
    We were using a different product for many years and noticed this year that the product was not working as good as it use to years before. Still had fleas. so we decided to try K9 Advantix 2. we have a Great Dane so we got the one for his size and it worked GREAT! No more fleas. No more of him biting himself and being miserable. We ordered more for our little dogs and cannot wait for that to come so they are not in misery anymore. Had the same product for them before the K9 Advantix as our great Dane and its not working for them neither so thought we would try k9 Advantix for them to. I would recommend this product. by on 08/11/2014
  • This product works.
    We live in tick infested arer with lots of wildlife including deers. This product keeps our dog free of insects. Not one tick on him this year. by on 08/11/2014
  • finally something that works!!
    well i have been using frontline on my furbabies for years. then we took a camping trip to the beach and they all came back with a horrible flea problem?? we had to steam clean the carpets,bath all of them and i applied front line immediately after we got home. unfortunately the flea problem just got worse. I started to read stories of others that had used frontline and had the same problem,well i reluctantly decided to give advantix 2 a try and i only bought a one months supply. Well upon arrival i immediately applied the advantix to all of my dogs and patiently waited for the results. Well just like the package said within 24 hrs all of the fleas were gone,gone,gone yeah!!!!!!!!!!! I just ordered a years supply of advantix 2. Just like others have commented the only reason i can give for the problem is that i think fleas get build a resistance to certain flea treatments. who knows after i use advantix for a while i may have to switch back to frontline?? WE WILL SEE?? otherwise i highly recommend this product and if you buy in bulk the price is right compared to what the vet wants!! by on 08/10/2014
  • love it
    my dog has been on this product for 4yrs and we love it. it protect him in a lot of ways by on 08/08/2014
  • Great product, great price
    I have been using advantix on my dog for several years. I told my sister about it and now she uses it for all three of her dogs. You can't beat PetCareRx's price! by on 08/05/2014
  • This product is very effective.
    Very easy to use, lasts at least 30 days on my Westie, Silky Terrier and Poodle/Bichon mix. Keeps Mosquitos away which can be very annoying. by on 07/29/2014
  • Easy Peasey
    We rescue Pugs and buy all of our regular meds from PetCareRx. Never had a problem. We love the points feature, adding additional discounts or a combination. Keep it up - thank you. by on 07/22/2014
  • Great product
    Our dog Sierra had fleas realy bad about 5 years ago. No matter what we did they would not go away. We tried various other applications and then the vet said to try Canine Advantix II and have used it ever since. by on 07/21/2014
  • this product is great!
    I have used this product for the past 4years. I haven't had any problems with fleas or ticks on my dogs! by on 07/19/2014
  • works as described
    I've been using this product for my two German shepherds for years and we live in the woods where we are infested with ticks. If we do find a tick on the dogs it's usually already dead. Highly recommended by on 07/16/2014
  • Quality product, as advertised
    Prompt delivery of a quality product at a competitive cost. by on 07/11/2014
  • takes care of fly strikes
    I have used this product for years on all of our dogs. this is the first year that I have had trouble with ticks before the month was over. The fact that we don't have fly strike issues on the ear or mosquitoes issues is very important to us. The application is inconvenient, but all products for flea and tick are tough. by on 07/10/2014
  • K-9 Advantix II is a lifesaver for my dogs!
    I live next to a wooded, marshland area and we walk the path around the area at least a couple of times a day. In the summer, it is imperative to have an effective product to keep my dogs free of fleas and ticks. K-9 Advantix II has worked for me since I started using it a couple of years ago. by on 07/09/2014
  • This product does not work
    This product did not work at all. I applied it to my golden retriever and waited a couple of weeks, hoping it would work. It never did! My dog still had ticks, just from going out in our back yard. by on 07/08/2014
  • My dog is allergic to mosquitos
    This is the only product that works for my baby. Last year I tried all the lesser expensive flea medications, but my dog kept scratching. Her hindquarters were scratched bare despite medicines and baths. A trip to the vet ruled out fleas and mange. We thought she might be allergic to the grass or some other unknown substance. I thought I would try K9 Advantix. The scratching has completely stopped and we have not had a recurrence of the last year's heartbreaking problems. by on 07/08/2014
  • Works
    I have been using this for years, after learning that frontline did not work for my dog. In hot mississippi summers, the fleas and ticks are terrible, and yet my dog brings in none! Will keep using as long as it keeps working! by on 06/30/2014
  • good product
    We have used this product for at least 4 years on our dog. While it works well, it can be a problem trying to use the entire vial of the solution on a dog that is at the lower end of the weight scale. It is even possible to eke another week or so out of the product, as it seems to continue to work when you forget to reapply on time. by on 06/24/2014
  • bad absorbtion
    Product has a odor that lingers on my dogs for 3 weeks afterwards. Doesn't absorb well into their skin. Only using this because exterminator recommended it over Frontline. by on 06/23/2014
  • Great features but expensive
    It is effective and reliable but expensive. This is a bad year for fleas and ticks due to the winter weather but this stuff works. by on 06/16/2014
  • Great product, but price promotions keep changing
    Have used this product before, comparison shopped and at 20% off during memorial day weekend thought it was a good price. Much to my dismay, the day after I purchased it,I get an email showing the promotion went to 22% off, the day after that, 25% off. Makes me uneasy about knowing when to buy. by on 06/15/2014
  • Doesn't protect for full month
    Have used this product for 4 months now and not one month have I made it to the 3rd wk. before I see ticks on her. Has never made it to a month.Taking it into consideration, it is Spring rains, she swims in ponds, so will use up my supply thru winter time, to see if in the winter months she can go a month before dosing her again. by on 06/12/2014
  • Flea Protection
    I have bought this product before and have been very satisfied with it. It definitely makes sure you'll never have fleas. It is so easy to apply on your pet, very effective product. by on 06/12/2014
  • The only one to buy!
    Having been a dog owner for MANY years, I have tried a lot of different ways to avoid fleas, ticks, and pests. This is the ONLY one I've used that's been successful. I currently have two dogs, and living in the South, fleas can be year-round. Since using K9 Advantix II, I have had no problems with fleas at all. by on 06/09/2014
  • K9 Advantix II
    Have used the K9 Advantix for years because of its dual effectiveness in preventing both fleas and ticks. My dog is 11 years old. by on 06/07/2014
  • Product has always been exactly as claimed.
    We have been using this product from the time they were 1 year old on 2 English Springers that are now 9 and 10 yrs old. This product has delivered the protection as expected. I have never had any problems with this product or with pet Care reliability. I am very happy and would recommend it. by on 06/07/2014
  • Good, solid product. Does what it claims to.
    We've been using it for years on our little pooch and he's been just fine. Looks like it's working as designed. It's a little pricey but we don't have much choice there, now do we.There is nothing especially spectacular or especially bad about it and that's a good thing -- it's just a solid product that does what it claims to. by on 06/05/2014
  • This is a grea product
    I was using a flea medicine my vet recommended and it had worm medicine but didn't take care of ticks. That's why I switched to K9 Advantix II as it takes care of the ticks and fleas. Wish they would make one medicine to take care of all, but definitely recommend this as it works well by on 06/03/2014
  • No other product compares
    With 6 "big" indoor/outdoor dogs, this is the only product I trust to keep my pups free of not only fleas and ticks but ALSO flies, mosquitos and lice. They all love the water and rolling in dirt....they are protected, it keeps the bugs out of the house and they are much more comfortable (no scratching/biting)! by on 05/30/2014
  • Absolutely the best flea product on the market today !
    We have 4 dogs ranging from 20 lbs to 175 lbs and this product has virtually stopped them from itching. I will buy again and and again...you should too ! LOVE K9 Advantix ll for dogs ! ARF ARF. by on 05/22/2014
  • Works just fine
    We have used this product for a while now on our 2 dogs. We haven't had any problems with it. Sometimes we will still find a tick right at the peak season, but they won't be attached to the dog. We switched to a cheaper brand for one month and had a huge issue with ticks. I won't make that mistake again. I'm sticking with what I know works, and this product works. This is the brand we will continue to buy. by on 05/22/2014
  • Eh still early in the game
    Got this stuff because it repels Mosquitos along with everything else. I usually use frontline but my mom suggested this so I tried it. First month I've pulled about 4 ticks off my 5 1/2 pound yorkiepoo It also makes her itch like crazy when applied. I had to bath her a week after I applied it. Wish I could of done it sooner but figured it would wash the stuff off. Let's hope the next 5 months work for her. Poor girl by on 05/21/2014
  • This product is very easy to use.
    It has been wonderful and very effective for my short-haired dog. But not so great for my long-haired dog. Two weeks after applying the product, I found two embedded ticks on her tummy. by on 05/18/2014
  • Great Product
    Love this...only one that really keeps the ticks and mosquitos away! by on 05/13/2014
  • outdated product
    our groomer charged us an xtra $80 for excessive ticks on our animals after using your product by on 05/10/2014
  • Lasts longer than Frontline on my larger dog.
    I find that this will last a full month whereas Frontline and another brand I bought only lasted about 2 - 3 weeks. My Bella is in the woods daily and we have alot of ticks in our area. by on 05/07/2014
  • found a tick on my german shepherd/blue heeler mix
    I used this on my pit bull and german shepherd/blue healer mix and have found no fleas, but have found a tick on both of them and it has only been about 2 weeks since I applied advantix. I paid extra for this type because it is supposed to protect against ticks. I feel that I may as well have paid more for the leading brand or less for the brands that don't protect agianst ticks. by on 05/05/2014
  • this product is pretty good for my dogs
    I like the fact that I don't have to buy different packets for my dogs, one is bigger than the other. And yet same product same size for both. by on 05/01/2014
  • This product has the best coverage available
    We have two small dogs. This product works well on my Malti-Poo with no adverse affects. However, it causes sores on my Malti-Chon so we have to use a different product for her. by on 05/01/2014
  • Advantix II does keep Jake free from fleas & ticks
    I tried a cheaper "vet recommended" product, and my poor little Jake (11-year old mini Schnauzer) ended up with a horrible flea infestation that took forever to clear, both on him and in the house. I will never switch again! by on 04/30/2014
  • Advantix II does keep Jake free from fleas & ticks
    I tried a cheaper "vet recommended" product, and my poor little Jake (11-year old mini Schnauzer) ended up with a horrible flea infestation that took forever to clear, both on him and in the house. I will never switch again! by on 04/30/2014
  • still scratching
    Both dogs still scratching............wondering ifAdvantage would have been the better choice. by on 04/27/2014
  • Very effective
    I tried many of the brand named flea medications, and this is the only one that really works. Don't waste your money trying the other brands, they are not as effective. by on 04/27/2014
  • still finding ticks on our dogs.
    K9 Advantix seems to have no effect on ticks. We treated our dogs two weeks ago, and we are still finding ticks on them constantly. I won't continue to pay for this product if it doesn't work. by on 04/24/2014
  • Still early
    I have applied only one application of this product, and so far no fleas or ticks. It is rather early in the season. Check back in a couple of months.The scent is not noticable, which is nice. by on 04/23/2014
  • Great it works fantastic
    The only flea and tick I have ever used since I got my mastiff at 10 lbs now 149.8 lbs I love this stuff by on 04/23/2014
  • K9 Advantix II very effective
    No fleas, no ticks, no skeeter bites. Effective all month, we use it year round. No irritation.. Love it!! by on 04/16/2014
  • 4yrs Free of Flees, Ticks, etc
    4yrs Free of Fleas, Ticks, etcEasy to ApplySuggest using disposable glove to avoid human skin contactHint: while groomers will apply directly after bath & dry, it's highly recommended to wait 12 to 24 hrs after a bath, to apply for maximum absorption. by on 04/12/2014
  • In Two Words: It works!!
    Have been using the product on my Golden Retrievers for years. Wouldn't switch to another. by on 04/12/2014
  • Perfect great product
    I have 3 small dogs and living in Florida my dogs got fleas i was going crazy got them the K9 Advantix II OMG it work perfect in minutes they stop scratching . I recommend it. I dont care about the price its worth it. by on 04/12/2014
  • great product
    We moved to NC from TX and had never dealt with fleas. The fleas here are really bad. We tried all of the top spot treatments and nothing worked until we found this one. Even at the vet they have s chart that says the others are not effective. Don't waste money starting with the cheap stuff cause they probably won't work anyway. by on 04/07/2014
  • Veterinarian Recommended
    We've been using Advantix II ever since we got our dog. The vet suggested it at the time he was getting his vaccinations. Buddy has been flea and tick free since we've been using it and it doesn't seem to mind its application. by on 03/27/2014
  • This is K9 Advantix II for Dogs is a high quality and effective product that is easy to use. Love it and so does my dog!
    This is K9 Advantix II for Dogs is a high quality and effective product that is easy to use. Love it and so does my dog! by on 03/27/2014
  • easy to use - works great
    Advantrix works better than other products I have tried including higher priced merchandise. It is easy to use and I will continue to use this product for my pets. by on 03/26/2014
  • GREAT SERVICE FANTASTIC
    KOREY WAS GREAT FANTASTIC VERY VERY CORDEL PROFESSIONAL KNEW HIS COMPANY POLICIES. AND EXPLAINED THEM VERY WELL-----WELL SPOKEN. by on 03/24/2014
  • This product was a perfect fit for my pup!
    I had always used Frontline for my dog Michael, he is 4 years old. He began having skin irritation due to flea bites, the K9 Advantix2 repels the bugs, no more problem!!!!! by on 03/20/2014
  • Good product
    Used for at least 20 years on all of our dogs. Seems to also help repel the fleas. by on 03/18/2014
  • good product
    Have been using this on my dog of 5 years. Works great and easy to use. by on 03/18/2014
  • k9 Advantix II for Dogs
    This product is very good and the price is much cheaper than anywhere else I have found. It is very effective and easy to use. by on 03/09/2014
  • Works great!
    Been using this on my dog for 3 years and she has never had a flea or tick or bug on her. by on 03/03/2014
  • Best Product
    Most effective med for prevention andKilling fleas and eggs,Frontline is preventativeI changed to Advantix and will neverusr Frontline again. by on 03/01/2014
  • K9 Advantix II for dogs
    Have used this product for several years. Works very well and pets have no reaction. Switched from Front Line, however, I hear they have changed the formula and may give them another try in the future. by on 02/27/2014
  • Is the best one I found for my dogs
    I used to use another brand but at the time I had two dogs (Yorkies) and they became allergic to it the hair on their backs started to change color and getting very thin. Our vet said it was an allergic reaction to the product and to try Advantix II, never had another problem again. I highly recommend it. by on 02/24/2014
  • Love this product!
    I decided to use this product on my pets after my mom used it on her flea-covered dogs. She had tried other products before, but this one worked the best at completely eliminating all the fleas from the dogs. After witnessing that, I have used only this product on my 15-pound Westie/Jack Russell mix, and have never seen a single flea on her, or in my house. And she is one of the healthiest animals I've ever seen. I'll never use anything else. by on 02/14/2014
  • Better than Frontline
    When I was using Frontline, my dog continued to scratch quite often. Now that I'm using Advantix he almost never scratches. by on 02/14/2014
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