--- 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: "AR$204915" currency: ARS in_stock: true reviews_count: 5 url: https://www.desertcart.com.ar/products/254644756-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-small store_origin: AR region: Argentina --- # kills fleas within 2 hours waterproof after swimming or showering 2-month continuous pest protection Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 **Brand:** k9 advantix **Price:** AR$204915 **Availability:** ✅ In Stock ## Summary > 🐾 Protect your small dog like a pro—fast, fierce, and waterproof! ## 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?** AR$204915 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/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 - • **Broad-Spectrum Defense:** Repels and kills ticks, mosquitoes, biting flies, and lice for all-around protection. - • **Rapid Flea Elimination:** Kills fleas within 2 hours to keep your pup itch-free fast. - • **Inhibits Flea Growth Cycle:** Stops flea eggs and larvae from developing, breaking the infestation cycle at the source. - • **Vet-Trusted for Small Dogs:** Specifically formulated for puppies and small dogs (4-10 lbs) to ensure safe, effective pest control. - • **Long-Lasting Waterproof Formula:** Stays effective even after weekly swims or baths—no need to worry about water exposure. ## Overview Bayer K9 Advantix II is a topical flea, tick, mosquito, and lice prevention treatment designed for small dogs (4-10 lbs). It combines imidacloprid, permethrin, and pyriproxifen to kill fleas within 2 hours, repel multiple pests, and inhibit flea growth stages. The waterproof formula remains effective after swimming or bathing, providing up to 2 months of continuous protection. ## 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 ## Features - Item Category: Pet Pest Control - Item Trademark: Bayer Animal Health - manufacturer: Bayer ## Technical Specifications | Specification | Value | |---------------|-------| | Active Ingredients | Permethrin | | Age Range Description | Puppy | | Asin | B00I0BXQ6Q | | Best Sellers Rank | #70,354 in Pet Supplies (See Top 100 in Pet Supplies) #74 in Dog Flea Drops | | Brand Name | K9 Advantix | | Customer Reviews | 4.3 4.3 out of 5 stars (7,717) 4.3 out of 5 stars | | Dog Breed Size | Small | | Global Trade Identification Number | 00724089060556 | | Item Form | Topical | | Item Weight | 18 g | | Manufacturer | K9 Advantix | | Manufacturer Part Number | 86314878 | | Model Number | 86314878 | | Scent Name | Unscented | | Target Species | Dog | | Unit Count | 2 Count | | Upc | 724089060556 | | Volume | 0.8 Milliliters | ## Product Details - **Active Ingredients:** Permethrin - **Brand:** K9 Advantix - **Item form:** Topical - **Item weight:** 0.04 Pounds - **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) ![Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 - Image 2](https://m.media-amazon.com/images/I/91DsrNd57GL.jpg) ![Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 - Image 3](https://m.media-amazon.com/images/I/81lc7ZPFGHL.jpg) ![Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 - Image 4](https://m.media-amazon.com/images/I/71a-ElIlHLL.jpg) ![Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for Small Dogs, 4-10 lbs 4-10 lb 5406055 - Image 5](https://m.media-amazon.com/images/I/81PFfMmFM7L.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 ### ⭐⭐⭐⭐⭐ Worked fast and gave my dog immediate relief *by on Reviewed in the United States 6 August 2026* My Shih Tzu is part of the family, so seeing him constantly scratching and feeling uncomfortable really worried me. After spending some time outdoors, he picked up fleas and started scratching so much that his skin became irritated.A friend recommended K9 Advantix II, and I'm so glad I tried it. I noticed a difference the very same day. He stopped scratching, the fleas were gone, and he was finally comfortable again.It's been about a month since I applied it, and even after a couple of baths, he hasn't had any flea problems. The price may seem a little high, but when it comes to your pet's comfort and health, it's absolutely worth it.For reference, my dog is a Shih Tzu weighing around 9–10 pounds, and this product worked exactly as I hoped. I would definitely recommend it to anyone looking for fast and effective flea protection. ### ⭐⭐⭐⭐ Original is Best *by on Reviewed in the United States 15 May 2026* This product worked, but the added medication for flea eggs caused a problem. My little dog was jumping out of her skin for 2 days. It caused uncontrollable itching both times I used it. I switched to the original K9 Advantix and voila… no problems! Sometimes the original doesn’t need messing with. ### ⭐⭐⭐⭐ flea prevention *by on Reviewed in the United States 7 September 2026* good ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/254644756-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-small](https://www.desertcart.com.ar/products/254644756-bayer-k9-advantix-ii-flea-tick-and-mosquito-prevention-small) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-17*