---
product_id: 254644756
title: "Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055"
brand: "k9 advantix"
price: "€ 85.30"
currency: EUR
in_stock: true
reviews_count: 5
category: "K9 Advantix"
url: https://www.desertcart.fi/products/254644756-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-small
store_origin: FI
region: Finland
---

# Waterproof after swimming or shower Kills fleas in 2 hours Protects against multiple pests & diseases Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055

**Brand:** k9 advantix
**Price:** € 85.30
**Availability:** ✅ In Stock

## Summary

> 🦴 Keep your small dog pest-free and thriving—because they deserve the best!

## Quick Answers

- **What is this?** Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 by k9 advantix
- **How much does it cost?** € 85.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/254644756-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-small)

## 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

- • **Multi-Pest Shield:** Repels and kills ticks, mosquitoes, biting flies, lice, and all flea life stages.
- • **Disease Prevention:** Guards against ticks that transmit Lyme Disease and other serious infections.
- • **Puppy-Safe Formula:** Gentle enough for puppies as young as 7 weeks, ensuring early protection.
- • **Rapid Flea Defense:** Eliminates fleas within 2 hours to keep your pup itch-free fast.
- • **All-Weather Protection:** Waterproof formula stays effective even after swimming or bathing.

## Overview

Bayer K9 Advantix II is a fast-acting, waterproof topical treatment designed for small dogs (4-10 lbs) that kills fleas within 2 hours and protects against ticks, mosquitoes, biting flies, and lice. Its unique combination of imidacloprid, permethrin, and pyriproxifen disrupts flea development and offers comprehensive pest control, including prevention of tick-borne diseases. Safe for puppies over 7 weeks, it maintains effectiveness even after swimming or bathing.

## Description

K9 Advantex II Dog 2 Month Supply K9 Advantex II provides protection from pests through topical action. Protects against fleas (flea eggs and larvae), ticks, mosquitoes, biting flies, and lice. It combines imidacloprid and permethrin with a pyriproxifen insect growth regulator, which interferes with the hormone signaling of fused insects so that fleas in immature stages cannot dissolve. K9 Advantex II for monthly use on puppies (up to 7 weeks of age) and dogs. Do not use on cats. Repels and kills ticks, fleas, mosquitoes, repels biting flies, kills lice, and kills all life stages of fleas. Inhibits the growth of fleas, flea eggs and larvae. Kills fleas within 12 hours of initial use. Kills fleas within 2 hours. Protects against ticks that may transmit organisms that can cause Lyme Disease, Rocky Mountain Spotted Fever, Ehrlichius and Waterproof Napplasma Continue to work after a weekly shower or swim For best results, use a non-cleaned sha

Review: Fast acting solution for flea outbreak. My dog didn’t have a bad reaction or anything
Review: Works very well, excellent price

## Features

- Item Category: Pet Pest Control
- Item Trademark: Bayer Animal Health
- manufacturer: Bayer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00I0BXQ6Q |
| Batteries Included | No |
| Best Sellers Rank | #50,671 in Pet Supplies ( See Top 100 in Pet Supplies ) #59 in Dog Flea Drops |
| Customer Reviews | 4.3 4.3 out of 5 stars (7,534) |
| Date First Available | 15 February 2014 |
| Item Form | Topical |
| Item Weight | 18.1 g |
| Item model number | 86314878 |
| Number of Items | 1 |
| Pet Life Stage | Puppy |
| Product Dimensions | 2.54 x 11.11 x 12.07 cm; 18.14 g |
| Quantity | 1 |
| Volume | 0.8 Milliliters |
| batteries required | No |

## Product Details

- **Active Ingredients:** Permethrin
- **Brand:** K9 Advantix
- **Item form:** Topical
- **Item weight:** 18 g
- **Scent:** Unscented

## Images

![Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 - Image 1](https://m.media-amazon.com/images/I/71vHmvPM6hL.jpg)

## Questions & Answers

**Q: can k9 be used on puppies 8 weeks old  she  keeps biting her side  like something is there**
A: I would try giving the puppy a bath with Dawn liquid soap and talk to you local vet about giving this to your new puppy

**Q: Do u have one for Poodles 21 23 lbs.**
A: Use Frontline or Advantage. Advantix does not work as well.

**Q: Can anyone in florida give me your opinion on it’s effectiveness? i’m told that the fleas in fl are developing a resistance to some treatments.**
A: I live in the Tampa Bay area in Florida and used this on my chihuahua for over 3 years and it has been very effective.  I do not give him heart worm treatment since it repels and kills mosquitos as well and every time the vet has done his heart worm test, it has been negative.  Therefore, I highly recommend this product, not only for fleas, which he has never had but for mosquitoes as well.

**Q: Delivery on6-28?**
A: Hi. Unfortunately, we’re not able to answer this question. We recommend you contact the seller for more information.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***N on 17 January 2026*

Fast acting solution for flea outbreak. My dog didn’t have a bad reaction or anything

### ⭐⭐⭐⭐⭐ Review
*by D***N on 11 January 2026*

Works very well, excellent price

### ⭐⭐⭐⭐ Review
*by M***L on 5 August 2025*

This is the best flea treatment so far for my 5lb chihuahua. Just like humans every dog is different so it’s important to find what works best for your pet. My dog has epilepsy and a heart condition and has no irritation with this medication and it works immensely better than frontline. I think the fleas in my area are immune to frontline so that could be why it doesn’t work. Same for my sisters cats, frontline doesn’t work either. Advantage works the best for getting rid of fleas. I was told to use a different medication each month so last month I used frontline and my poor baby was bitten up. She might have had about 5 fleas on her but it still makes a difference and about 30 minutes after I put on advantage she’s feeling better. That month was horrible for baby. I’m glad we’re sticking to advantage now. But remember every dog is different and fleas in your area might also have immunity to certain formulas as well so it might take time to find the right flea prevention for you.

## Frequently Bought Together

- K9 Advantix II Small Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 4-10 lbs. | 2-Mo Supply
- K9 Advantix II Medium Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 11-20 lbs. | 2-Mo Supply
- K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 2-Mo Supply

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-06*