---
product_id: 255854838
title: "– II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 4-Mo Supply"
brand: "k9 advantix"
price: "€ 88.53"
currency: EUR
in_stock: true
category: "K9 Advantix"
url: https://www.desertcart.hr/products/255854838-ii-large-dog-vet-recommended-flea-tick-and-mosquito-treatment
store_origin: HR
region: Croatia
---

# For dogs 21-55 lbs Waterproof after 24 hours Kills fleas in 12 hours – II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 4-Mo Supply

**Brand:** k9 advantix
**Price:** € 88.53
**Availability:** ✅ In Stock

## Summary

> 🐾 Stay ahead of pests, keep your best friend unstoppable!

## Quick Answers

- **What is this?** – II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 4-Mo Supply by k9 advantix
- **How much does it cost?** € 88.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/255854838-ii-large-dog-vet-recommended-flea-tick-and-mosquito-treatment)

## 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

- • **All-Weather Protection:** Waterproof formula ensures lasting defense even after a swim or rain.
- • **Broad-Spectrum Defense:** Repels and kills fleas, ticks, mosquitoes, biting flies, and lice on contact.
- • **Effortless Application:** Fragrance-free, easy-to-apply topical treatment—no prescription needed.
- • **Rapid Flea Elimination:** Kills fleas within 12 hours to keep your dog itch-free fast.
- • **Vet-Recommended & Trusted:** Clinically proven, vet-approved formula for reliable pest control.

## Overview

K9 Advantix II Large Dog is a vet-recommended, fast-acting topical treatment designed for dogs weighing 21-55 lbs. It kills fleas within 12 hours and provides waterproof protection against fleas, ticks, mosquitoes, biting flies, and lice for up to 30 days per dose. This fragrance-free, easy-to-apply formula requires no prescription and offers a 4-month supply to keep your dog pest-free and comfortable.

## Description

K9 Advantix II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 4-Mo Supply : desertcart.ae: Pet Supplies

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004QMX4YW |
| Active Ingredients | Imidacloprid, Permethrin, Pyriproxyfen |
| Age Range Description | 7 weeks and older |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | #3,528 in Pet Supplies ( See Top 100 in Pet Supplies ) #7 in Dog Flea Drops |
| Brand Name | K9 Advantix |
| Customer Reviews | 4.5 4.5 out of 5 stars (9,285) |
| Dog Breed Size | Large |
| Global Trade Identification Number | 00724089203991 |
| Included Components | 4 |
| Item Form | Topical |
| Item Type Name | Topical |
| Item Weight | 8 g |
| Manufacturer | K9 Advantix |
| Manufacturer Part Number | 710546030004 |
| Model Number | 86315041 |
| Scent Name | Unscented |
| Target Species | Dog |
| UPC | 724089203991 |
| Unit Count | 1 Count |
| Volume | 10 Milliliters |

## Product Details

- **Active Ingredients:** Imidacloprid, Permethrin, Pyriproxyfen
- **Brand:** K9 Advantix
- **Item form:** Topical
- **Item weight:** 8 g
- **Scent:** Unscented

## Images

![– II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 4-Mo Supply - Image 1](https://m.media-amazon.com/images/I/71U+2ITgYeL.jpg)

## Questions & Answers

**Q: I am thinking about ordering a 6 pack which some would be kept for next year. How do I know what the date is on the product?**
A: I looked everywhere on the individual package of the tubes and the box, there is nothing that mentions an expiration or use by date. There are phone numbers to call for questions...1-800-255-6826. Looking at how the tubes are packaged, my best guess would be that as long as they are sealed properly and not opened you could probably use unopened tubes at a later time. I have 2 dogs and ordered the six pack myself, if I don't use give my girls all 3 of their doses this year I will probably use it up next summer then.

**Q: What is the expiration date on this $41 product currently for sale???**
A: The expiration date is usually stamped into the package. And $41 is very good price for k9 Advantix II. It's often quite more expensive from your vet or other sites.

**Q: Is this safe for sight hounds and/or dogs over the age of 12? Thank you for taking time to answer.**
A: Yes, there should be no issue when using on a sight hound.  I use this on my Brittney with no issues.  Be advised this does not " repel" ticks.  Ticks will still get onto your dog and can/will bite however, the tick will be impaired/ killed over a few hours time after biting.  When used with a organic spray for Ticks you should have no issues.  I have never had a flea on my dog nor my 2 cats. I recommend this product fully.  Be sure to match your dog's weight with the correct Advantix.

**Q: Does it send all 6 doses at a time?**
A: When you order a 6 pack that means 6 doses.  IF you order a 3 or 4 pack.  it is that many doses respectively.

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.hr/products/255854838-ii-large-dog-vet-recommended-flea-tick-and-mosquito-treatment](https://www.desertcart.hr/products/255854838-ii-large-dog-vet-recommended-flea-tick-and-mosquito-treatment)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-09*