--- product_id: 64339323 title: "VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack)" brand: "vet one" price: "VT743" currency: VUV in_stock: false reviews_count: 8 url: https://www.desertcart.vu/products/64339323-vetone-crossblock-ii-kills-and-prevents-fleas-on-dogs-puppies store_origin: VU region: Vanuatu --- # VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) **Brand:** vet one **Price:** VT743 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) by vet one - **How much does it cost?** VT743 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/64339323-vetone-crossblock-ii-kills-and-prevents-fleas-on-dogs-puppies) ## Best For - vet one enthusiasts ## Why This Product - Trusted vet one brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Full description not available ## Product Details - **Brand:** Vet One - **Scent:** Unscented - **Item Volume:** 0.41 Fluid Ounces - **Age Range (Description):** Puppy - **UPC:** 313985014178 ## Images ![VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) - Image 1](https://m.media-amazon.com/images/I/71o5Jf3ORHL.jpg) ![VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) - Image 2](https://m.media-amazon.com/images/I/81Zzpi7lrOL.jpg) ![VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) - Image 3](https://m.media-amazon.com/images/I/71KXz6VA6sL.jpg) ![VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) - Image 4](https://m.media-amazon.com/images/I/71DRG03gabL.jpg) ![VetOne - CrossBlock II™ Kills & Prevents Fleas on Dogs & Puppies (Over 7 Weeks Old) | Waterproof to Last Long | Ensures 3 Months of Protection | Intended for Dogs Over 55 lbs (3 Pack) - Image 5](https://m.media-amazon.com/images/I/81koC5xZMBL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works, rids pets of fleas FAST *by U***T on October 29, 2019* We use this to protect our pets during flea season. It is the only topical treatment that has actually worked for us in recent years. The older, trusted brands no longer are effective. We purchase the large dog formula and dose it as 0.8ml per ten pounds for our smaller animals, per our vet. This works out even more cost efficient! It is safe to be used on any animal when dosed correctly. It is important when treating your animals that you treat all animals on your premises, repeating in 3-4 weeks, to be sure to kill all life cycles. ### ⭐⭐⭐⭐⭐ Works like a charm. *by U***M on March 15, 2019* We have 4 cats and 2 dogs, one of which has a terrible flea allergy, so fleas are a constant issue in our house. We have wasted so much money on topical flea treatments that don't work (Frontline I'm looking at you) that we were paying a lot for premium flea medication from our vet (Nextguard). It works but one dog had an odd skin reaction to it (like hives, bumps, but not itchy or flat, which caused hair loss after they receeded). Plus, did I mention it's expensive? So on to something new. Capstar and capstar generics work well in a pinch, but are not a permanent solution for us. I've used Advantage 2 in previous years with some success, but it seemed less effective the last 2 years. I did not have high hopes for this generic version, but we were desperate as flea season has started and I wanted to get a jump on it before it got really bad. For some reason, like a miracle, it seems to work like a charm. We buy it in this bulk size and measure it out with a dropper to dose all the animals accordingly. I also use a higher end flea spray around the house and vacuum every few days. We are 99% flea -free right now. I highly recommend Crossblock as a major part of a flea treatment plan. ### ⭐⭐⭐⭐ same ingredients as advantage ii but cheaper *by A***R on November 11, 2021* This has the same ingredients as advantage ii (for dogs and cats) so i divide it for my cats (I have 12) to save money. You cannot do this with Advantix it is toxic to cats so make sure you look at the ingredients and that they match ingredients to advantage ii (you can also use original advantage to do this but adv. ii has an added ingredient for the life cycle of the fleas so that's why i use it). Just fyi some cats are still affected and become weak from this but will recover in a few days. It is rare. My orange tabby is affected by any flea tick medicine including yard granules and any that are specific to cats. But all my other cats were fine. I have decided to use a homeopathic powder for my orange tabby. To use this on cats I empty the contents of one container into a small bottle or something with a lid. I then take a small syringe (needle discarded) to draw up .04 ml (for cats under 9 lbs, over 9 lbs use .08 ml) and place on neck between shoulder blades like directed. if you look at other reviews of Advantage (regular or II) there are other people that do this. If you buy the package for dogs 55 lbs and up you can get up to ten cats from one tube! Quite a savings! --- ## 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.vu/products/64339323-vetone-crossblock-ii-kills-and-prevents-fleas-on-dogs-puppies](https://www.desertcart.vu/products/64339323-vetone-crossblock-ii-kills-and-prevents-fleas-on-dogs-puppies) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-08*