---
product_id: 275291135
title: "Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month"
brand: "k9 advantix"
price: "FREE"
currency: PAB
in_stock: false
reviews_count: 5
category: "K9 Advantix"
url: https://www.desertcart.com.pa/products/275291135-bayer-k9-advantix-ii-medium-dogs-11-to-20-pound
store_origin: PA
region: Panama
---

# 6-month long protection Specifically for medium dogs (11-20 lbs) Triple-action pest defense Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month

**Brand:** k9 advantix
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🛡️ Keep your best friend pest-free and stress-free—because they deserve the best!

## Quick Answers

- **What is this?** Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month by k9 advantix
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/275291135-bayer-k9-advantix-ii-medium-dogs-11-to-20-pound)

## Best For

- k9 advantix enthusiasts

## Why This Product

- Trusted k9 advantix brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Thousands:** 4.6-star rating from over 8,000 pet parents who won’t settle for less
- • **Allergen-Free Formula:** Gentle on your pet’s skin with an unscented, hypoallergenic solution
- • **Half-Year Peace of Mind:** Up to 6 months of continuous, hassle-free topical protection
- • **Tailored for Medium Dogs:** Perfectly dosed for dogs weighing 11 to 20 pounds
- • **Triple-Action Pest Shield:** Combats fleas, ticks, and larvae with Imidacloprid, Permethrin & Pyriproxyfen

## Overview

Bayer K9 Advantix II is a topical flea and tick treatment designed for medium dogs weighing 11 to 20 pounds. Featuring a powerful triple-action formula with Imidacloprid, Permethrin, and Pyriproxyfen, it offers up to 6 months of allergen-free, unscented protection. Highly rated by thousands of users, it ensures your dog stays comfortable and pest-free with a trusted, veterinarian-recommended solution.

## Description

Buy Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Buena relación calidad-precio - En la caja vienen 6 pipetas, como se indica en la descripción: 4 de ellas vienen en el sobre hermético de la propia caja y las otras 2 vienen sueltas (la caja realmente es de 4). Contenta con la calidad de Advantix, no me arriesgo a probar con otra marca. Muy recomendado por la relación calidad-precio.
Review: Easy and Effective Tick and Flea Treatment - I have used this product over the years, on 5 different dogs (Yorkies and Silky Terriers). All have been house dogs but they are around relatives' and neighbors' dogs frequently and are outside in our backyard or on walks often. I have never seen a flea, even though some months I have completely forgotten to apply the product. In more than 20 years, I think we have had a dog show up no more than 3-4 times with a tick crawling on it or barely attached (probably during one of those months I forgot to apply). I really like using K9 Advantix II because 1) it works 2) it's easy to apply one a month) 3) dogs don't mind it and it's non-irritating to their skin and 3) it's a topical application and not some drug the dog has to take. You do have to wait 24 hours after applying to bathe the dog.

## Features

- manufacturer: K9 Advantix
- Item Trademark: K9 ADVANTIX
- Item Weight: pounds, pounds, 0.10, 0.10
- Item Category: Pet Pest Control

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004QN0LYW |
| Active Ingredients | Imidacloprid, Permethrin, Pyriproxyfen |
| Age Range Description | 7 weeks and older |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | #37,279 in Pet Supplies ( See Top 100 in Pet Supplies ) #128 in Dog Flea & Tick Control |
| Brand | K9 Advantix |
| Brand Name | K9 Advantix |
| Customer Reviews | 4.6 out of 5 stars 8,233 Reviews |
| Dog Breed Size | Medium |
| Global Trade Identification Number | 00724089203809 |
| Item Form | Topical |
| Item Weight | 50 g |
| Item form | Topical |
| Item volume | 6 Milliliters |
| Item weight | 50 g |
| Manufacturer | K9 Advantix |
| Manufacturer Part Number | 86315122 |
| Model Number | 86315122 |
| Pet Type | Dog |
| Scent | Unscented |
| Scent Name | Unscented |
| Target Species | Dog |
| UPC | 724089203809 |
| Unit Count | 320.0 Ounce |
| Volume | 6 Milliliters |

## Product Details

- **Active Ingredients:** Imidacloprid, Permethrin, Pyriproxyfen
- **Brand:** K9 Advantix
- **Item form:** Topical
- **Item weight:** 50 g
- **Scent:** Unscented

## Images

![Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month - Image 1](https://m.media-amazon.com/images/I/71ycK8f5pGL.jpg)
![Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month - Image 2](https://m.media-amazon.com/images/I/91Hy56NPkcL.jpg)
![Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month - Image 3](https://m.media-amazon.com/images/I/81lc7ZPFGHL.jpg)
![Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month - Image 4](https://m.media-amazon.com/images/I/71a-ElIlHLL.jpg)
![Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month - Image 5](https://m.media-amazon.com/images/I/81PFfMmFM7L.jpg)

## Questions & Answers

**Q: does this work on mosquitos**
A: Yes! It will keep the fleas off the mosquito. But at the same time, it will kill the mosquito. Use only on dogs from 11-20 lbs.

**Q: Does Amazon assure that these medicines are not expired or tampered?  Is the supplier veterinarian approved?**
A: Yes,  Piccardmeds4pets Corp was created by a Veterinarian Professional, with over 20 years of experience in the field. We have partner with major distributors to bring you not only the best the best prices, but quality and fresh product.

**Q: can i give my dog a bath**
A: Its best to wait a few days before bathing your pet. It gives the medicine time to soak into the skin and do what its designed to do best.

**Q: how long after a bath can I put this on my dog?**
A: Go ahead and put the drops on your dog immediately after bathing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buena relación calidad-precio
*by S***4 on 10 June 2018*

En la caja vienen 6 pipetas, como se indica en la descripción: 4 de ellas vienen en el sobre hermético de la propia caja y las otras 2 vienen sueltas (la caja realmente es de 4). Contenta con la calidad de Advantix, no me arriesgo a probar con otra marca. Muy recomendado por la relación calidad-precio.

### ⭐⭐⭐⭐⭐ Easy and Effective Tick and Flea Treatment
*by S***T on 28 September 2026*

I have used this product over the years, on 5 different dogs (Yorkies and Silky Terriers). All have been house dogs but they are around relatives' and neighbors' dogs frequently and are outside in our backyard or on walks often. I have never seen a flea, even though some months I have completely forgotten to apply the product. In more than 20 years, I think we have had a dog show up no more than 3-4 times with a tick crawling on it or barely attached (probably during one of those months I forgot to apply). I really like using K9 Advantix II because 1) it works 2) it's easy to apply one a month) 3) dogs don't mind it and it's non-irritating to their skin and 3) it's a topical application and not some drug the dog has to take. You do have to wait 24 hours after applying to bathe the dog.

### ⭐⭐⭐ Works where Frontline does not, BUT.
*by P***R on 28 May 2012*

Last year I adopted a puppy and took him to work with me every day for the next 8 months. The company I worked for in San Francisco is dog-friendly, and there were upwards of 100 dogs in the building on any given day. Since much of the building is carpeted, fleas were definitely an issue and pretty soon my pup had them. I used Frontline and treated my apartment and the carpet around my desk at work with both diatomaceous earth and something to kill the eggs, but 2 weeks later, he had picked them up again. I waited one more week, applied Frontline again, and within two weeks he was infested again. A co-worker told me his wife is a vet tech and according to her, fleas in some areas are becoming immune to Frontline. I wish I could tell you whether it's NorCal or SoCal that had the Frontline-immune fleas, but I was traveling back to L.A. every weekend during this period so it's possible he was picking them up there too... though not as likely, as his exposure to other animals on weekends was minimal. On the advice of a friend who swears by Advantix II, I switched to using it and voila! No more fleas. It definitely worked, and quickly. I was convinced. BUT, last night I used it on my younger dog for the first time this year, and the new dog we adopted in December. I used the size-appropriate dose for each. The new, smaller dog (7 lbs) seems fine but my younger dog (around 15.5 lbs) has been really agitated and distressed since then, and is biting at his tail and seems to be unable to get comfortable. He's not crying or whining, but he's alternating between hyper and agitated or clingy. He's also been panting occasionally despite his short summer haircut and the air-conditioned house. He doesn't seem to be in any pain but something's up. Assuming nothing escalates and he seems to feel better, I'll use this again because it's better than a flea infestation, but I would only recommend this with the caveat to watch your dog very carefully after application. Edited to add: As it turns out, my dog was fine and I'm pretty sure his behavior is because it was itchy - he went to the groomer earlier that day, and my theory is that the natural oils in his skin had been stripped away. When it's time for him to be treated again I'll make sure to wait a few days after the grooming.

## Frequently Bought Together

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

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-09*