K9 Advantix II Small Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 4-10 lbs. | 1-Mo Supply

$18.98

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(as of Oct 30, 2025 16:03:43 UTC – Details)


K9 Advantix II Small Dog is the veterinarian-recommended formula that helps defend your dog against five pests: fleas, ticks, mosquitoes, biting flies and lice. And unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes. K9 Advantix II topical treatment gets straight to work killing fleas on dogs within 12 hours of initial application. This formula stops existing flea infestations and prevents new ones by killing adult fleas on contact so they can’t lay eggs and they don’t have to bite your dog to die. Fleas, ticks, mosquitoes and other pests not only cause discomfort; they may also transmit disease. Monthly use of K9 Advantix II is important to protect your dog against fleas that may cause transmission of tapeworms. This formula also kills fleas which may cause Flea Allergy Dermatitis and flea bite anemia. That’s why K9 Advantix II Small Dog topical, spot-on formula makes application simple – going on in seconds. It’s easier than a flea collar and there are no hard-to-swallow pills. You’ll also love that K9 Advantix II is fragrance-free and waterproof after 24 hours of application. Check the product label for information on application and potential side effects. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. Your dog should be at least 7 weeks old and weigh 4-10 lbs. to use K9 Advantix II Small Dog. For the ultimate convenience in care, K9 Advantix II is available over the counter – no prescription needed. And, you can stock up with 2-dose, 4-dose and 6-dose packs so you never miss a monthly treatment. Once K9 Advantix II is applied, your dog is ready to get right back to big-pup cuddles and racing around the park. K9 Advantix II Small Dog is a trademark of Elanco or its affiliates.
Product Dimensions ‏ : ‎ 4.25 x 0.88 x 4.75 inches; 0.63 ounces
Manufacturer recommended age ‏ : ‎ 1 month and up
Item model number ‏ : ‎ 90204383
Date First Available ‏ : ‎ March 13, 2019
Manufacturer ‏ : ‎ Elanco US Inc
ASIN ‏ : ‎ B07NX5BNYH
Best Sellers Rank: #1,863 in Pet Supplies (See Top 100 in Pet Supplies) #12 in Dog Flea Drops
Customer Reviews: 4.3 4.3 out of 5 stars 18,587 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

K9 Advantix II Small Dog 30-day treatment & prevention protects dogs 4-10 lbs. from fleas, ticks, mosquitoes, biting flies and lice
Kills fleas within 12 hours of application
Vet-recommended formula kills & repels on contact so fleas don’t have to bite your dog to die
Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours
No prescription needed

Customers say

Customers find the pest control product easy to apply and consider it better than Seresto collars. However, the effectiveness and flea control receive mixed feedback – while some say it works well, others report it didn’t work at all or didn’t kill fleas. Moreover, the product receives mixed reviews for value, with some finding it decent for the price while others consider it a waste of money. Skin irritation is a significant concern, with customers reporting that it causes itching and allergic reactions, while lethargy and seizures are also reported side effects.

8 reviews for K9 Advantix II Small Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 4-10 lbs. | 1-Mo Supply

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  1. susan tedesco

    No more fleas !!!
    It came the next day I put it on my little Maltese she had fleas & flea eggs work fast no black little spots of eggs or fleas my little girl Maltese is 5 pounds and 19 months old it works like a charm no scratching or biting. I check her all the time. What a relief!

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  2. Amira

    Effective and worth the purchase.
    Great product, I’ve been using for years on my multiple dogs and they’ve never had fleas. I specifically but this brand though because it also protects from mosquitos, which we have some issues with during the summer months. I’ve seen, after application, mosquitos try to land my dogs, but fly right off, so it def helps repel them. I usually put it on my dogs in the evening so that the product has a chance to dry and I not accidentally pet them and get the stuff on my hands. Would be nice if it was a cheaper price, but it does what it says, so I’ll keep buying. My dogs have never had a adverse reaction, so that’s a plus also.

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  3. Anonymous

    My dog is really happy now
    We all experience this when we have a pet. My dog has been scratching like crazy. This works perfectly fine. all the lice and flea, after applying this died and I can see that when I showered him two days later. No appearance side effects on my dog.. have to be careful when applying it and follow the instructions carefully.

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  4. MJ

    Effective to an extent
    K9 Advantix does work. I’ve used it for two summers now. My only disappointment is that the product doesn’t prevent or stop new fleas from attaching to your pet. It will get rid of fleas once they’ve attached, but won’t stop fleas from attaching. It would be nice if this product could work as a preventative.

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  5. Louise Norman

    FLEA,TICK & MOSQUITO PROTECTION
    HAVE BOUGHT THIS BEFORE & IT IS VERY EASY TO USE

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  6. rhonda Perry

    Not working
    I’ve always bought this product but it isn’t working anymore. When I would apply to the back I would see it. I applied last night and don’t see the oil on the skin and the fleas are still on her back. I’m cancelling my subscription. I just don’t even think there is anything in the little vil but air.

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  7. Gwendolyn

    Works great
    Have used this brand for years on our shih-Tzus. Very effective. It controls the fleas and other bugs. Has a slight smell.

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  8. Tara S

    Eh
    Easy to use. Still found a tick on my toy poodle after using.

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    K9 Advantix II Small Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 4-10 lbs. | 1-Mo Supply
    K9 Advantix II Small Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 4-10 lbs. | 1-Mo Supply

    $18.98

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