K9 Advantix Flea, Tick & Mosquito Prevention for Extra Large Dogs Over 55 lbs., 2-Monthly Treatments
K9 Advantix Flea, Tick & Mosquito Prevention for Extra Large Dogs Over 55 lbs., 2-Monthly Treatments
Hero image 0 of K9 Advantix Flea, Tick & Mosquito Prevention for Extra Large Dogs Over 55 lbs., 2-Monthly Treatments, 0 of 8
100+ bought since yesterday, try a subscriptionOverall pick
K9 Advantix II

K9 Advantix Flea, Tick & Mosquito Prevention for Extra Large Dogs Over 55 lbs., 2-Monthly Treatments

K9 Advantix Flea, Tick & Mosquito Prevention for Extra Large Dogs Over 55 lbs., 2-Monthly TreatmentsK9 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 TreatmentsK9 Advantix Flea Tick Mosquito Prevention for Medium Dogs 11 20 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 CountK9 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 Treatments6 pack K9 Advantix Flea Tick Mosquito Prevention for Small Dogs 4 10 lbs 2 Monthly Treatments
Multipack Quantity:1
Pet Size:Extra Large

Key item features

  • An excellent value from the K9 Advantix brand
  • K9 Advantix Extra Large Dog 30-day treatment & prevention protects dogs over 55 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
Price when purchased online
  • Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $14.98
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $14.98

How do you want your item?

Try 30 days for just $1! Choose a plan at checkout.
How do you want your item?
Ships to
Arrives by Tomorrow
Low stock
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
walmart plus

Try 30 days of Walmart+ for just $1!

T&C apply.

About this item

Product details

Specifications

Indications

Directions

Ingredients

Warnings

Refine your search

Customer ratings & reviews

4.3 out of 5 stars
stars6,543 ratings1,908 reviews
How item rating is calculated
  1. 5 stars68% (4,443)
  2. 4 stars13% (841)
  3. 3 stars8% (504)
  4. 2 stars3% (226)
  5. 1 star8% (529)

Reviews summary

Pros

  • : Application process is simple and fast.
  • : Provides long-lasting defense against multiple insects.
  • : Works without side effects.
  • : Offers good value at this price point.
  • : Has little to no noticeable odor.
Generated by AI

Customer photos

  • +196 images
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 1,908 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?2AOU0QP68G3R2340108313
Aug 3, 2025
Kathy
Item details
Multipack quantity: 1
Pet size: Extra Large
5 out of 5 stars review

Verified Purchase

Finally something that works!

I had been using a different product and my dogs were still itching so I decided to purchase this one - it’s magical how a brand name F/T medicine worked so quickly. Haven’t seen them itching/scratching much at all this last month. Will be purchasing again.

Helpful?2AOU0QP68G3R2340108313
Sep 1, 2025
martha
Top Reviewer
Item details
Multipack quantity: 1
Pet size: Extra Large
5 out of 5 stars review

Verified Purchase

Mags

I ordered this for granddaughters dog. She had a huge patch of hair pulled out by her tail. Granddaughters mom said most drops break Mags out, possible infection. This really helped her without causing any physical problems. Mags is getting hair close to her tail again She doesn't live with me or I would send pic. Mags a happy girl

Helpful?2AOU0QP68G3R2340108313