--- product_id: 254644767 title: "Bayer II Flea Prevention for Large Cats, Over 9 lbs" brand: "advantage" price: "€ 93.00" currency: EUR in_stock: true category: "Advantage" url: https://www.desertcart.gr/products/254644767-bayer-ii-flea-prevention-for-large-cats-over-9-lbs store_origin: GR region: Greece --- # Specifically designed for large cats 9+ lbs Kills fleas within 12 hours Dual-action formula for total flea control Bayer II Flea Prevention for Large Cats, Over 9 lbs **Brand:** advantage **Price:** € 93.00 **Availability:** ✅ In Stock ## Summary > 🐾 Stay ahead of fleas—because your big cat deserves big protection! ## Quick Answers - **What is this?** Bayer II Flea Prevention for Large Cats, Over 9 lbs by advantage - **How much does it cost?** € 93.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/254644767-bayer-ii-flea-prevention-for-large-cats-over-9-lbs) ## Best For - advantage enthusiasts ## Why This Product - Trusted advantage brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual-Action Power:** Combines imidacloprid and pyriproxyfen to paralyze fleas and stop egg development. - • **Rapid Flea Elimination:** Kills fleas on contact within 12 hours—no waiting, no biting required. - • **Tailored for Large Cats:** Precisely dosed for cats over 9 lbs, ensuring maximum effectiveness and safety. - • **Easy Topical Application:** Simple, mess-free spot-on treatment that spreads over skin and hair for full coverage. - • **Indoor & Outdoor Protection:** Reliable flea defense whether your cat roams inside or outside—keep your feline friend flea-free year-round. ## Overview Advantage Bayer II Flea Prevention is a fast-acting, dual-ingredient topical treatment designed specifically for large cats over 9 pounds. It kills fleas within 12 hours by contact, preventing bites and breaking the flea life cycle by stopping egg and larva development. Suitable for indoor and outdoor cats, this easy-to-apply formula ensures comprehensive flea control and peace of mind for proactive pet parents. ## Description From the manufacturer For Use on Indoor and Outdoor Cats Find the right treatment for your cat Advantage II for cats is for use on both indoor and outdoor cats and kittens 8 weeks of age or older, weighing at least 2 pounds. Select the right size for your cat based on weight. Kitten: 2-5 pounds Small cats: 5-9 pounds Large cats: Over 9 pounds How to apply Be sure to use the entire tube of Advantage II when applying it to your cat. Part the hair on your cat’s neck at the base of skull until the skin is visible. Squeeze the tube to expel the entire contents directly on the skin. Do not get the product in your cat’s eyes or allow your cat to ingest the product. Do not allow the product to run off. Do not split tubes between multiple cats. See package insert for additional details. How does it work? Advantage II for cats is a topical flea treatment that spreads over the skin and hair. Advantage II kills through contact, so fleas don’t have to bite your cat to die. With oral flea treatments, fleas must bite your cat and ingest the medication before they are killed. Frequently Asked Questions How long does it take to work on fleas? Advantage II for cats kills fleas within 12 hours of application. Why do I still see fleas after using Advantage II? The fleas you see on your pet today are not the same fleas that you initially saw when you applied the treatment. These are new fleas from the environment that have since developed into adults and jumped on your cat. As the weeks go by, these developing stages should run their course and disappear. Be sure to treat your pet’s environment, including your home, yard, carpet, bedding, etc. Does it expire? There is no expiration date required on the packaging by the EPA for Advantage II for cats. The product should be kept in its original packaging and stored as directed on the label. What are the key ingredients? Advantage II for cats contains two active ingredients: imidacloprid, which attacks the flea’s nervous system, to paralyze and kill it, and pyriproxyfen, which prevents eggs and larvae from maturing. ## Features - manufacturer: Bayer - Item Trademark: BAYER - Item Weight: pounds, pounds, 0.041, 0.041 - Item Category: Pet Pest Control ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00N7DEFH6 | | Active Ingredients | Imidacloprid, Pyriproxyfen | | Age Range Description | Adult | | Best Sellers Rank | #41,707 in Pet Supplies ( See Top 100 in Pet Supplies ) #26 in Cat Flea Drops | | Brand | Advantage | | Brand Name | Advantage | | Customer Reviews | 5.0 out of 5 stars 1 Review | | Dog Breed Size | Large | | Global Trade Identification Number | 00724089682512 | | Item Form | Topical | | Item Weight | 18 g | | Item form | Topical | | Item volume | 1.6 Milliliters | | Item weight | 18 g | | Manufacturer | Advantage | | Manufacturer Part Number | 86336677 | | Model Number | 86336677 | | Scent | fragrance_free | | Scent Name | fragrance_free | | Target Species | Cat | | UPC | 724089682512 | | Unit Count | 2 Count | | Volume | 1.6 Milliliters | ## Product Details - **Active Ingredients:** Imidacloprid, Pyriproxyfen - **Brand:** Advantage - **Item form:** Topical - **Item weight:** 18 g - **Scent:** fragrance_free ## Images ![Bayer II Flea Prevention for Large Cats, Over 9 lbs - Image 1](https://m.media-amazon.com/images/I/71Yes1zVT2L.jpg) ## Questions & Answers **Q: Why is the item called "Bayer K9 Advantix II Flea and Tick Control Treatment for Cats"? The Bayer K9 is, of course, for dogs.** A: Please be sure to use ONLY Feline Advantage on cats and use ONLY the dog Advantage on dogs! The use of canine Advantage on cats WILL kill them giving them severe neurological damage! I wish that Advantage would make the packaging TOTALLY different for cats and dogs, it would help. Especially with people who may not see the difference at first glance. My elderly mom accidentally applied the large dog Advantage to her cat and it had to be put down. Mom has felt horrible about it. Awful experience. Also about dosing, I have a 19 year old cat and I have used feline Advantage on him every summer for about 3 months for well over 17 years. It works wonderfully for him. I have always used the large cat product but since he has lost some weight this year I called Bayer and asked if I should use a smaller dose. The person at Bayer explained that Advantage works on body AREA as well as weight. So even though my cat has lost some weight (he's 9 pounds) his body AREA is still the same (loose skin) and so I have been applying the large cat dose and it has worked well for him this summer with no ill effects. I cannot speak to the authenticity of this Amazon product as I purchase my Advantage from the local pet store. **Q: When using this medicine, do I also need to flea bomb or spray the apartment ? Or will the medicine kill all fleas in the apartment, as well?** A: You'll find a wide range of advice on here. I can only tell you what has worked for me on several occasions. This topical treatment will kill only the fleas that get on your cat. There are several options for your home. They range from safe/natural formulas to strong pesticides. The all safe/natural offerings work for a short time and only kill the fleas that come in contact with the spray. I keep a bottle outside to spray on my feet and ankles to kill the fleas from outside that have hopped on me while in the yard. Great for this and for bedding. Next, as for bombs - there is only one that I have found that works. Most bombs are cans of spray that has a button that locks down to empty the can of spray. They may work but only cover a very small area effectively. Raid makes a bomb that you drop into a supplied plastic cup with about an inch of water in it. When the bomb canister hits the water, it will begin to smoke. The smokenfills the entire area. Three cannisters come in the box and can cover a small house effectively, every nook and cranny. It is called Raid Fumigator. I have NEVER had to use it twice. This type of treatment requires you to remove ALL pets for about 6 hours, but it does work. Raid also makes a carpet spray that works well. But again, pets must not be around it until the fumes die down - about 30-40 minutes. Two other options are Boric Acid or diotemaceus earth (food grade!). These two products are applied similarly. You sprinkle them on carpet or furniture and take broom or brush to rub them in. This will take a few days to a week or so to get control of a home invasion. They work by cutting the exo-skeleton of fleas, roaches, etc and cause them to dehydrate. The Boric Acid can cause irritation to some pets or people, where the diotemac ous earth is 100% safe other than breathing the fine dust that occurs only when you are applying it. Both work great! The problem with a lot of people complaining that a product doesn't work is that they don't realize that the flea you see is only 5% of what is in your house. The other 95% are eggs (laid about 50 at a time) and the larvae. There is a cycle that last up to several weeks. When these doubters kill the 5% adult fleas and then find more fleas a few days later, they think it doesn't work. But in reality, they are see new hatchlings. That's where the Boric Acid and Diotemaceus earth come in handy if you can't use the Fumigator. An infested home can seem unsurmountable but try the products that you feel safe with, give it time and vacuum everyday you can and you will win! **Q: Is this 6 month supply a 6 pack of tubes?** A: Hi Doreen... Actually, I bought the 4 pack because I have four cats. I had earlier in the month bought a 4 pack someplace else, so I had two treatments for each cat. I did the treatments three weeks apart (the instructions say it is OK to do if you wait seven days). I bought the 9+ lb. package as three of the cats are well over that weight. One cat is a bit smaller and I didn't use quite all of the tube on her. None of the cats had any bad reactions, and it worked well for three of them. The other cat (partial Maine Coon) had some results, but not so good. **Q: Does this kill ticks? If not, what do people recommend for ticks?** A: To get rid of fleas and ticks use Frontline Plus. I started to use it on mine a year ago it killed the ticks and fleas. I reapply it every other month and I haven’t seen one since. ## Frequently Bought Together - Advantage II Large Cat Vet-Recommended Flea Treatment & Prevention | Cats Over 9 lbs. | 2-Month Supply - Advantage II Small Cat Vet-Recommended Flea Treatment & Prevention | Cats 5-9 lbs. | 2-Month 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.gr/products/254644767-bayer-ii-flea-prevention-for-large-cats-over-9-lbs](https://www.desertcart.gr/products/254644767-bayer-ii-flea-prevention-for-large-cats-over-9-lbs) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-19*