---
product_id: 287176093
title: "Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004"
brand: "k9 advantix"
price: "NT$5548"
currency: TWD
in_stock: true
reviews_count: 6
category: "K9 Advantix"
url: https://www.desertcart.tw/products/287176093-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-medium
store_origin: TW
region: Taiwan
---

# Waterproof, works after swimming Kills fleas within 12 hours 30-day continuous protection Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004

**Brand:** k9 advantix
**Price:** NT$5548
**Availability:** ✅ In Stock

## Summary

> 🐾 Protect your pup like a pro—because your dog deserves the best defense!

## Quick Answers

- **What is this?** Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 by k9 advantix
- **How much does it cost?** NT$5548 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/287176093-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-medium)

## 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

- • **Month-Long Shield:** One application protects your dog for a full 30 days against fleas, ticks, and mosquitoes.
- • **Vet-Trusted Formula:** Recommended by veterinarians for safe, effective pest control on medium dogs.
- • **Rapid Action Defense:** Starts killing fleas in just 12 hours—no waiting, no itching.
- • **Waterproof Protection:** Keeps working even after baths or weekly swims—because life doesn’t pause for pests.
- • **All Life Stages Covered:** Kills fleas at every stage—eggs, larvae, and adults—breaking the infestation cycle.

## Overview

Bayer K9 Advantix II is a veterinarian-recommended topical treatment for medium dogs (11-20 lbs) that kills and repels fleas, ticks, mosquitoes, biting flies, and lice. Its fast-acting formula starts killing fleas within 12 hours and provides waterproof protection for 30 days. The product targets all flea life stages, preventing reinfestation, and is safe for puppies as young as 7 weeks. Each package contains four monthly doses, ensuring continuous, hassle-free pest control.

## Description

K9 Advantix II Dog: 4 Month Supply K9 Advantix II delivers pest protection through topical action. It protects against fleas (flea eggs AND larvae), ticks, mosquitoes, biting flies, and lice. It combines imidacloprid and permethrin with insect growth regulator pyriproxyfen, which interferes with the hormone signaling of molting insects so that fleas in immature stages are unable to molt. K9 Advantix II is for monthly use on puppies (as young as 7 weeks old) and dogs. DO NOT USE ON CATS. Features: Repels AND kills ticks, fleas, and mosquitoes Repels biting flies Kills Lice Kills ALL life stages of fleas. Prevents development of fleas, flea eggs, and larvae Kills fleas within 12 hours of initial application. Kills reinfesting fleas within 2 hours Protects against ticks that may transmit organisms that can cause: Lyme disease, Rocky Mountain spotted fever, Ehrlichiosis, Anaplasmosis Waterproof- continues to work after a bath or weekly swimming (for optimal results, use a non-detergent shampoo) One application lasts for a month Can be used on puppies as young as 7 weeks old Has easy-to-follow application instructions on the back of every package Item Specifications: Weight: 4-10lbs: Green 11-20lbs: Teal 21-55lbs: Red Over 55lbs: Blue Dose: Includes 4 applicators Application: Apply the entire contents of the tube evenly to two to three spots on the top of the back from the shoulder to the base of the tail. Monthly application. Length of Effectiveness: Under normal conditions, the product is effective for a month. However, in cases of severe flea infestation, retreatment may be necessary earlier than four weeks. Do not retreat more often than once every seven (7) days. After flea control is attained, return to a monthly retreatment schedule. Ingredients: 8.80% Imidacloprid 44.00% Permethrin 0.44% Pyriproxyfen 46.76% other ingredients Active ingredients work synergistically: The combination of imidacloprid with permethrin exerts a unique synergistic effect on the arthropod

Review: السعر مرتفع مقارنة في جودة المنتج
Review: Recomendable

## Features

- New packaging, same formula: Contains four one month applications of Bayer K9 Advantix II topical flea, tick and mosquito prevention for medium dogs 11 to 20 pounds
- K9 Advantix II kills through contact, so fleas, ticks and mosquitoes don't have to bite your dog to die
- Veterinarian recommended
- Repels and kills fleas, ticks and mosquitoes
- Topical treatment is easy to apply, starts working to kill fleas within 12 hours and keeps working for 30 days

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004QMX4RY |
| Allergen Information | Abalone Free |
| Batteries Included | No |
| Best Sellers Rank | #20,776 in Pet Supplies ( See Top 100 in Pet Supplies ) #31 in Dog Flea Drops |
| Color | 11-20 lbs |
| Customer Reviews | 4.5 4.5 out of 5 stars (6,097) |
| Date First Available | 6 August 2012 |
| Flavor | Other |
| Item Form | Topical |
| Item Weight | 22.7 g |
| Item model number | 86315157 |
| Number of Items | 4 |
| Pet Life Stage | All Life Stages |
| Pet Type | Dog |
| Product Dimensions | 19.69 x 2.54 x 10.8 cm; 22.68 g |
| Quantity | 1 |
| Size | 11-20 lb |
| Volume | 4 Milliliters |
| batteries required | No |

## Product Details

- **Active Ingredients:** Permethrin
- **Brand:** K9 Advantix
- **Item form:** Topical
- **Item weight:** 23 g
- **Scent:** Unscented

## Images

![Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 - Image 1](https://m.media-amazon.com/images/I/71SCebDcfqL.jpg)
![Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 - Image 2](https://m.media-amazon.com/images/I/91nHlDAC7AL.jpg)
![Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 - Image 3](https://m.media-amazon.com/images/I/81EDjQqM2WL.jpg)
![Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 - Image 4](https://m.media-amazon.com/images/I/81lc7ZPFGHL.jpg)
![Bayer K9 Advantix II Flea, Tick & Mosquito Prevention for Medium Dogs, 11-20 lbs 11-20 lb 710546020004 - Image 5](https://m.media-amazon.com/images/I/71a-ElIlHLL.jpg)

## Customer Reviews

### ⭐⭐⭐ Review
*by A***R on 31 January 2024*

السعر مرتفع مقارنة في جودة المنتج

### ⭐⭐⭐⭐⭐ Review
*by P***I on 8 November 2020*

Recomendable

### ⭐⭐⭐⭐ Review
*by J***Z on 24 April 2019*

Llego en la fecha comprometida. Aparte traia un pequeño detalle, que es de agradecer, con unas chuches para el rey de la casa, para que el "trago" de la desparasitazación sea más dulce.

## Frequently Bought Together

- K9 Advantix II Medium Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 11-20 lbs. | 4-Mo Supply
- K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 4-Mo Supply
- K9 Advantix II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21 - 55 lbs. | 4-Mo Supply

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-12*