---
product_id: 5749537
title: "K9 Advantix II Flea Control for Dogs 21-55 Pounds (6 Applications)"
brand: "bayer"
price: "11.64 DT"
currency: TND
in_stock: false
reviews_count: 8
url: https://www.desertcart.tn/products/5749537-k9-advantix-ii-flea-control-for-dogs-21-55-pounds
store_origin: TN
region: Tunisia
---

# Water-resistant formula 6 monthly applications included Kills fleas in 12 hours K9 Advantix II Flea Control for Dogs 21-55 Pounds (6 Applications)

**Brand:** bayer
**Price:** 11.64 DT
**Availability:** ❌ Out of Stock

## Summary

> 🐾 Stay ahead of pests, keep your dog unstoppable!

## Quick Answers

- **What is this?** K9 Advantix II Flea Control for Dogs 21-55 Pounds (6 Applications) by bayer
- **How much does it cost?** 11.64 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/5749537-k9-advantix-ii-flea-control-for-dogs-21-55-pounds)

## Best For

- bayer enthusiasts

## Why This Product

- Trusted bayer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Vet-Trusted & Safe:** EPA-approved, safe for dogs 7 weeks and older weighing 21-55 lbs—no prescription needed.
- • **Rapid Flea Eradication:** Eliminates 98-100% of fleas within 12 hours—fast relief for your active dog.
- • **Long-Lasting Protection:** 6 monthly doses provide half a year of continuous defense against pests.
- • **Water-Resistant Formula:** Keeps working through baths and rainy days—no interruptions in protection.
- • **Broad-Spectrum Pest Control:** Repels and kills ticks and mosquitoes, guarding against Lyme and West Nile viruses.

## Overview

K9 Advantix II is a vet-recommended topical flea and tick treatment designed for dogs weighing 21-55 pounds. Each pack includes 6 water-resistant monthly applications that kill 98-100% of fleas within 12 hours and repel ticks and mosquitoes, providing up to 6 months of continuous protection. Safe for puppies 7 weeks and older, this EPA-approved formula helps prevent flea allergy dermatitis and vector-borne diseases like Lyme and West Nile virus, ensuring your dog stays healthy and itch-free.

## Description

K9 Advantix Red kills 98100 of fleas on dogs within 12 hours and continues protection at least 4 weeks. Repels and kills a majority of ticks and mosquitoes. This is the ultimate protection for your dog Each packet contains 6 applications providing 6 months of protection. Protect your pet today. Effective Flea Tick Control . . . No Prescription RequiredGuaranteed US EPA approved. Each package of K9 Advantix for Dogs lasts 4 to 6 months (One vial per month) Kills 98100 of fleas within 12 hours helpful in dogs with Flea Allergy Dermatitis Protects against deadly Lyme Disease, spread by ticks Repels and kills mosquitos, carriers of dangerous West Nile Virus Waterresistant, easy to apply formula stays on in baths or in the rain CLICK HERE for additional information on K9Advantix.

Review: works for my "herd" - I have six (yes 6) dogs and 2 cats... The dogs are indoor-outdoor kids...you know, if they are in they want out and if they are out they want in! We live outside of the city limits and have our share of wildlife - fox, raccoons, possum etc. along with all the neighbors who let their dogs run loose. I do what I can to keep the yard sprayed - but it becomes a loosing battle by the mid-summer to late fall. This product keeps the fleas off the dogs and makes such a difference during those periods when our Mississippi weather promotes the mad hatching of fleas. I have tried other products in the past - nothing works like K9 Advantix for our household. We have a place in the "hills" we visit from time to time - notorious for ticks - we have yet to have any ticks return with us from these trips! Our six "kids" fall into three different weight categories - two are right on the upper end of the cut off - with those I use the next dose up. They range in size from an 85 pound German Shepherd to an 18 pound Poodle mix. None of my pups have every had a skin or nervous system reaction to this product. No problems and no complaints.
Review: Best flea/tick medication for our needs. Also covers mosquitoes but not Heartworm, which has low risk in Southern California - We researched multiple flea medicine and finally went with K9 Advantix II. Compared to other flea & tick only medication, K9 Advantix II checked more boxes than the others. In addition to killing adult and developing fleas (which any flea medicine should do, unless it's just water), it also prevent ticks (which Advantage II doesn't) and mosquitoes (which Advantage II and Frontline Plus doesn't). The only other one we seriously considered was Revolution for Dogs, since it covers fleas, ticks, AND heartworm. Using Revolution would allow us to skip giving Heartgard (for heartworm). But the reason why we went with K9 Advantix is because we looked at the exposure of Heartworm where we live, in Southern California, and it's a super low exposure rate. There was a higher exposure rate to mosquitos (which Revolution does not cover), so we went with that. My advice to those researching which medication to buy, fleas and ticks coverage is necessary everywhere. Look at the exposure rate of Heartworm and mosquitoes where you live to see if you need coverage for that (just search for maps online, there are plenty). And buy what fits your needs. I don't like the idea of over-medicating, so the bare minimum is better than wide coverage. NOTE: I'm not an dog expert, just a conscious pet owner. If you have doubts, talk to a vet.

## Features

- Once a month topical flea treatment for dogs
- Kills 98 to 100 percent of fleas within 12 hours
- Safe for dogs 7 weeks and older and weighing 21 55 pounds
- Water resistant; includes 6 applications for 6 months of protection
- Please read all label information on delivery

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000Q5N7B8 |
| Age Range (Description) | Large dogs 21-55 |
| Age Range Description | Large dogs 21-55 |
| Best Sellers Rank | #231,900 in Pet Supplies ( See Top 100 in Pet Supplies ) #283 in Dog Flea Drops |
| Brand | Bayer |
| Brand Name | Bayer |
| Customer Reviews | 4.5 out of 5 stars 413 Reviews |
| Included Components | 6 MONTH K9 Advantix II RED for Large Dogs (21-55 lbs) |
| Item Form | Drops |
| Item Volume | 9 Milliliters |
| Item Weight | 2.08 ounces |
| Manufacturer | K-9 Advantix |
| Manufacturer Part Number | 004BAY-067399 |
| Model Number | 004BAY-067399 |
| Target Species | Dog |
| UPC | 024089616341 724089616340 724089353108 |
| Unit Count | 1 Count |
| Volume | 9 Milliliters |

## Product Details

- **Age Range (Description):** Large dogs 21-55
- **Brand:** Bayer
- **Item Form:** Drops
- **Item Volume:** 9 Milliliters
- **Item Weight:** 0.13 Pounds
- **UPC:** 024089616341 724089616340 724089353108

## Images

![K9 Advantix II Flea Control for Dogs 21-55 Pounds (6 Applications) - Image 1](https://m.media-amazon.com/images/I/71k2TZcS71L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ works for my "herd"
*by P***M on August 23, 2010*

I have six (yes 6) dogs and 2 cats... The dogs are indoor-outdoor kids...you know, if they are in they want out and if they are out they want in! We live outside of the city limits and have our share of wildlife - fox, raccoons, possum etc. along with all the neighbors who let their dogs run loose. I do what I can to keep the yard sprayed - but it becomes a loosing battle by the mid-summer to late fall. This product keeps the fleas off the dogs and makes such a difference during those periods when our Mississippi weather promotes the mad hatching of fleas. I have tried other products in the past - nothing works like K9 Advantix for our household. We have a place in the "hills" we visit from time to time - notorious for ticks - we have yet to have any ticks return with us from these trips! Our six "kids" fall into three different weight categories - two are right on the upper end of the cut off - with those I use the next dose up. They range in size from an 85 pound German Shepherd to an 18 pound Poodle mix. None of my pups have every had a skin or nervous system reaction to this product. No problems and no complaints.

### ⭐⭐⭐⭐⭐ Best flea/tick medication for our needs. Also covers mosquitoes but not Heartworm, which has low risk in Southern California
*by J***S on September 4, 2015*

We researched multiple flea medicine and finally went with K9 Advantix II. Compared to other flea & tick only medication, K9 Advantix II checked more boxes than the others. In addition to killing adult and developing fleas (which any flea medicine should do, unless it's just water), it also prevent ticks (which Advantage II doesn't) and mosquitoes (which Advantage II and Frontline Plus doesn't). The only other one we seriously considered was Revolution for Dogs, since it covers fleas, ticks, AND heartworm. Using Revolution would allow us to skip giving Heartgard (for heartworm). But the reason why we went with K9 Advantix is because we looked at the exposure of Heartworm where we live, in Southern California, and it's a super low exposure rate. There was a higher exposure rate to mosquitos (which Revolution does not cover), so we went with that. My advice to those researching which medication to buy, fleas and ticks coverage is necessary everywhere. Look at the exposure rate of Heartworm and mosquitoes where you live to see if you need coverage for that (just search for maps online, there are plenty). And buy what fits your needs. I don't like the idea of over-medicating, so the bare minimum is better than wide coverage. NOTE: I'm not an dog expert, just a conscious pet owner. If you have doubts, talk to a vet.

### ⭐⭐⭐⭐ Switched from Frontline
*by S***S on March 20, 2011*

After having used Frontline for over 8 years, we switched to K9 Advantix in order to save money. We have 2 dogs (24 and 53 pounds) both using the 21-55 pound dose. Frontline offers a narrower dosing weight, therefore we had to purchase 2 different Frontline products. Purchasing one dose range of K9 Advantix in bulk will save us money. We were happy with Frontline, so this review will compare K9 Advantix to Frontline. Again we only made the switch to save money. Amazon by far is the best source for Frontline and Advantix. I have been unable to beat the price offered here. Likes: -Packaging: Much simpler to open then Frontline. -Tube of medication: Again much better than Frontline. Easy to pierce, no mess or dripping. -Flea and tick control: Seems to work just as well as Frontline did. -Skin reaction: Neither of our dogs had any irritation, itching, redness, etc from K9 Advantix. -Price: Did I mention I am saving a little money by switching? Dislikes: -Application: Must be dosed on 4 spots along spine. Much messier. Dog looks greasier for 2 days than with Frontline. Overall the switch has been fine for our dogs.

## Frequently Bought Together

- K9 Advantix II Flea Control for Dogs 21-55 Pounds (6 Applications)
- K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 6-Mo Supply
- K9 Advantix II Medium Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 11-20 lbs. | 6-Mo Supply

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-08*