K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 2-Monthly Treatment
K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 2-Monthly Treatment
Hero image 0 of K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 2-Monthly Treatment, 0 of 10
100+ bought since yesterday, try a subscriptionOverall pick
K9 Advantix II

K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 2-Monthly Treatment

|7,534 ratings
K9 Advantix II Monthly Flea & Tick Prevention for Large Dogs 21-55 lbs, 2-Monthly TreatmentK9 Advantix II Monthly Flea Tick Prevention for Large Dogs 21 55 lbs 2 Monthly TreatmentK9 Advantix II Monthly Flea Tick Prevention for Large Dogs 21 55 lbs 4 Monthly TreatmentK9 Advantix II Monthly Flea Tick Prevention for Large Dogs 21 55 lbs 1 Monthly TreatmentK9 Advantix II Monthly Flea Tick Prevention for Large Dogs 21 55 lbs 6 Monthly Treatment
Count Per Pack2

Key item features

  • K9 Advantix II Large Dog 30-day treatment & prevention protects dogs 21-55 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

About this item

Product details

Specifications

Indications

Directions

Warranty

Ingredients

Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars
7,534 ratings2,325 reviews
How item rating is calculated
  1. 5 stars71% (5,383)
  2. 4 stars11% (861)
  3. 3 stars6% (444)
  4. 2 stars3% (205)
  5. 1 star9% (641)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 2,325 reviews

Oct 11, 2026
Reviewer name: lisa
Top Reviewer
Item details
Count per pack: 2
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Fast acting in long lasting

I usually do not have flea problems, and I absolutely do not like flea control that you feed your pet. This word quickly, and the problem was solved.

Helpful?6f02d540-bb15-11f1-8643-3dea92e18e9a43468360
Oct 13, 2026
Reviewer name: Anita
Top Reviewer
Item details
Count per pack: 2
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great and tick prevention with a great price point

Helpful?6f02d540-bb15-11f1-8643-3dea92e18e9a43468360
Oct 14, 2026
Reviewer name: judy
Top Reviewer
Item details
Count per pack: 6
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Reliable brand. Easy to open and apply.

Helpful?6f02d540-bb15-11f1-8643-3dea92e18e9a43468360
Current price is $35.68$17.84/count
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $35.68
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $35.68

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 Today
.
Order within 10 hr 9 min
Sold and shipped by Walmart.com
Extended holiday returns
Free Holiday returns until Jan 31
This item is gift eligible

More seller options (1)

Starting from $35.69
walmart plus

Try 30 days of Walmart+ for just $1!

T&C apply.