K9 Advantix Flea, Tick & Mosquito Prevention for Medium Dogs 11-20 lbs., 2-Monthly Treatments
K9 Advantix Flea, Tick & Mosquito Prevention for Medium Dogs 11-20 lbs., 2-Monthly Treatments
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K9 Advantix Flea, Tick & Mosquito Prevention for Medium Dogs 11-20 lbs., 2-Monthly Treatments

K9 Advantix Flea, Tick & Mosquito Prevention for Medium Dogs 11-20 lbs., 2-Monthly TreatmentsK9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 lbs 2 Monthly Treatments2 pack K9 Advantix Flea Tick Mosquito Prevention for Extra Large Dogs Over 55 lbs 2 Monthly Treatments3 pack K9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 lbs 2 Monthly Treatments2 pack K9 Advantix Flea Tick Mosquito Prevention for Small Dogs 4 10 lbs 2 Monthly Treatments4 pack K9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 lbs 2 Monthly Treatments4 pack K9 Advantix Flea Tick Mosquito Prevention for Small Dogs 4 10 lbs 2 Monthly Treatments3 pack K9 Advantix Flea Tick Mosquito Prevention for Large Dogs 21 55 lbs 2 Monthly Treatments6 pack K9 Advantix Flea Tick Mosquito Prevention for Large Dogs 21 55 lbs 2 Monthly Treatments3 pack K9 Advantix Flea Tick Mosquito Prevention Treatment Small Dogs 4 10 lbs 2 Count6 pack K9 Advantix Flea Tick Mosquito Prevention for Small Dogs 4 10 lbs 2 Monthly TreatmentsK9 Advantix Flea Tick Mosquito Prevention for Extra Large Dogs Over 55 lbs 2 Monthly Treatments2 pack K9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 lbs 2 Monthly TreatmentsK9 Advantix Flea Tick Mosquito Prevention for Small Dogs 4 10 lbs 2 Monthly Treatments3 pack K9 Advantix Flea Tick Mosquito Prevention for Extra Large Dogs Over 55 lbs 2 Monthly TreatmentsK9 Advantix Flea Tick Mosquito Prevention for Large Dogs 21 55 lbs 2 Monthly Treatments6 pack K9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 lbs 2 Monthly Treatments2 pack K9 Advantix Flea Tick Mosquito Prevention for Large Dogs 21 55 lbs 2 Monthly Treatments
Multipack Quantity:1
Pet Size:Medium

Key item features

  • An excellent value from the K9 Advantix brand
  • K9 Advantix Medium Dog 30-day treatment & prevention protects dogs 11-20 lbs. from fleas, ticks, mosquitoes, biting flies and lice
  • Affordable formula works on contact to kill and repel fleas on dogs within 12 hours of application even without a bite
  • Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours
  • No prescription needed
Current price is $14.98$7.49/count
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Customer ratings & reviews

4.3 out of 5 stars
stars6,941 ratings1,946 reviews
How item rating is calculated
4.9
4.4
3.7
3.7

Reviews summary

Pros

  • : Application process is fast and requires minimal effort.
  • : Offers good cost-to-benefit ratio.
  • : Reduces scratching and itching in dogs.
  • : Prevents and kills fleas and ticks.
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Showing 1-3 of 1,946 reviews

Jan 29, 2026
Mel
Item details
Multipack quantity: 1
Pet size: Large
5 out of 5 stars review

Verified Purchase

K9 Advantage works

We had been having trouble with fleas when our dog. I had tried various other flea treatments, but none of them seem to work to eradicate all of the fleas. After reading the reviews,I had hopes that K9 Advantage might help. I’m glad I took the chance. One treatment was enough to kill all the fleas off my dog was in days. And they stayed off. I’m relieved to finally found a flea treatment that will work as promised.

Helpful?2AOU0QP68G3R2925998668
Jul 14, 2025
Justin
Item details
Multipack quantity: 1
Pet size: Extra Large
5 out of 5 stars review

Verified Purchase

I have used this product for a couple years now. It has always been effective at preventing and treating fleas and ticks. I'm not *********% sure about the biting flies, but my three year old Catahoula bulldog is an indoor dog and only goes outside to go potty or about three times a week to socialize with other dogs at a leashless dog park nearby. I haven't noticed any biting flies swarming him at least. I have used other flea/tick treatment, that one from Walmart as well, costing $5-$6 for a three month supply, and discovered that brand wasn't as effective after seeing a tick on my dog and increased scratching four days after applying that flea/tick treatment/prevention. I was wanting to test it's efficacy based on the very cheap price and won't use it again. Lesson learned. The price of this flea and tick treatment is very affordable, and it truly works. I have used it long enough to know it works. If anything, give it a try and see for yourself.

Incentivized Review
Helpful?2AOU0QP68G3R2925998668
Sep 7, 2025
Lynda
Item details
Multipack quantity: 1
Pet size: Medium
5 out of 5 stars review

Verified Purchase

Good dog-Good service

I have used K-9 Advantix on my dog for years and it does control fleas and itching, and since my dog sleeps with me, that is very important. It is also important that when I realized I was out, I went on-line to order it and picked it up the same afternoon. Both K-9 Advantix and Wal-Mart deserve 5 stars!

Helpful?2AOU0QP68G3R2925998668