--- product_id: 9550903 title: "K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4ct" brand: "k9 advantix" price: "€ 76.62" currency: EUR in_stock: true reviews_count: 10 url: https://www.desertcart.ie/products/9550903-k9-advantix-ii-flea-and-tick-topical-for-medium-dogs store_origin: IE region: Ireland --- # For dogs 11-20 lbs. Waterproof after 24 hours Kills fleas in 12 hours K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4ct **Brand:** k9 advantix **Price:** € 76.62 **Availability:** ✅ In Stock ## Summary > 🐾 Protect your pup like a pro — no pests, no worries! ## Quick Answers - **What is this?** K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4ct by k9 advantix - **How much does it cost?** € 76.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/9550903-k9-advantix-ii-flea-and-tick-topical-for-medium-dogs) ## 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 - • **Effortless Application:** Topical, fragrance-free, and waterproof after 24 hours for hassle-free use - • **Rapid Flea Elimination:** Kills fleas within 12 hours to stop infestations fast - • **All-in-One Pest Defense:** Repels and kills fleas, ticks, mosquitoes, biting flies & lice - • **Tailored for Medium Dogs:** Specifically designed for dogs weighing 11-20 lbs, ensuring perfect dosage - • **Vet-Recommended Protection:** Trusted formula that prevents disease-carrying pests without a prescription ## Overview K9 Advantix II Medium Dog is a vet-recommended, topical flea and tick treatment designed for dogs weighing 11-20 lbs. It kills fleas within 12 hours and repels multiple pests including ticks, mosquitoes, biting flies, and lice. The fragrance-free formula is waterproof after 24 hours and requires no prescription, making monthly application simple and effective for year-round protection. ## Description K9 Advantix II Medium Dog is the veterinarian-recommended formula that helps defend your dog against five pests: fleas, ticks, mosquitoes, biting flies and lice. And unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes. K9 Advantix II topical treatment gets straight to work killing fleas on dogs within 12 hours of initial application. This formula stops existing flea infestations and prevents new ones by killing adult fleas on contact so they can’t lay eggs and they don’t have to bite your dog to die. Fleas, ticks, mosquitoes and other pests not only cause discomfort; they may also transmit disease. Monthly use of K9 Advantix II is important to protect your dog against fleas that may cause transmission of tapeworms. This formula also kills fleas which may cause Flea Allergy Dermatitis and flea bite anemia. That’s why K9 Advantix II Medium Dog topical, spot-on formula makes application simple - going on in seconds. It's easier than a flea collar and there are no hard-to-swallow pills. You’ll also love that K9 Advantix II is fragrance-free and waterproof after 24 hours of application. Check the product label for information on application and potential side effects. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. Your dog should be at least 7 weeks old and weigh 11-20 lbs. to use K9 Advantix II Medium Dog. For the ultimate convenience in care, K9 Advantix II is available over the counter – no prescription needed. And, you can stock up with 2-dose, 4-dose and 6-dose packs so you never miss a monthly treatment. Once K9 Advantix II is applied, your dog is ready to get right back to big-pup cuddles and racing around the park. K9 Advantix II Medium Dog is a trademark of Elanco or its affiliates. ## Features - 5-WAY PROTECTION: For 30 days, 1 dose of K9 Advantix II treats and prevents fleas, ticks, mosquitoes, biting flies, and lice on dogs; DO NOT USE ON CATS - SAME-DAY FLEA CONTROL: These tick and flea drops for dogs kills fleas on dogs within 12 hours of application, helping provide relief from active infestations - REPELS & KILLS THROUGH CONTACT: K9 Advantix II kills and repels fleas and ticks through contact, so they don't have to bite your dog to die - VET-RECOMMENDED*: K9 Advantix II for Dogs is vet-recommended* flea, tick, and mosquito treatment and prevention without a prescription *Elanco Animal Health. Data on file. REF-23993 - EASY-TO-APPLY MONTHLY PROTECTION: This convenient flea and tick topical is easy to apply, and no prescription is needed ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B004QMX4RY | | Best Sellers Rank | #8 in Dog Flea Drops | | Date First Available | October 5, 2004 | | Department | Pet Supplies | | Item Model Number | 86315157 | | Manufacturer | Elanco US Inc | | Product Dimensions | 7.75 x 1 x 4.25 inches; 1.6 ounces | ## Product Details - **Active Ingredients:** Imidacloprid, Permethrin, Pyriproxyfen - **Allergen Information:** Allergen-Free - **Brand:** K9 Advantix - **Color:** Medium Dog only - **Dog Breed Size:** Medium - **Item Form:** Drops - **Item Volume:** 4 ml - **Item Weight:** 1.6 ounces - **Scent:** Unscented - **Unit Count:** 4 Count ## Images ![K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4ct - Image 1](https://m.media-amazon.com/images/I/71SLg5coc4L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy and Effective Tick and Flea Treatment *by on Reviewed in the United States September 28, 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. ### ⭐⭐⭐⭐⭐ Removed fleas and no rash *by on Reviewed in the United States October 18, 2026* This product works surprisingly well for our little dog. Normally we get Frontline but it gave all of our dogs a rash last time. So we were out to try a new product. This one got rid of the fleas and no rash this time. Happy dogs. ### ⭐⭐⭐⭐⭐ The Day the Fleas Packed Their Bags *by on Reviewed in the United States August 18, 2026* 5 stars. The fleas showed up. They rented tiny imaginary apartments in my dog's fur. Just a quick drop in a few spots. Now the fleas are packing their bags and moving out. Zero stars from the fleas. Five stars from us. ## 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 --- ## 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.ie/products/9550903-k9-advantix-ii-flea-and-tick-topical-for-medium-dogs](https://www.desertcart.ie/products/9550903-k9-advantix-ii-flea-and-tick-topical-for-medium-dogs) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-10-25*