# K9 Advantix II Flea & Tick Prevention for Dogs (11-20 lbs, 6 Doses) *Published: 2025-02-11 | Updated: 2025-01-17 | Source: https://shopsavvy.com/products/k9-advantix-ii-flea-and-tick-prevention-for-dogs-(11-20-lbs-6-doses)* --- **Brand:** Bayer Animal Health **Price Range:** $16.98 - $204.36 across 59 retailers ## Pros - Consistently reliable in preventing fleas and ticks - Provides peace of mind over years of use across different dogs - Highly satisfied with performance and effectiveness ## Cons - Application requires three spots along the dog's back, which is less convenient - One particular order did not work as expected ## Specifications | Attribute | Value | |-----------|-------| | Length | 4.1 in | | Height | 6.7 in | | Width | 1.4 in | | Weight | 0.15 lb | | title | K9 Advantix II Topical Medium Dog Flea & Tick Treatment - 20 lbs | ## About This Product 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... ## Last Seen Prices | Retailer | Price | Availability | Last seen | Store's standard terms | |----------|-------|-------------|-----------|------------------------| | [Petflow](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/FB4zkgspNAdpQHLdfUdZ?source=shopsavvy&medium=product-page) | $16.98 | In Stock | 2023-08-30 (may have changed) | | | [Yow Pet Supplies](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/7e3af9ff-f8a0-60df-258c-6609021bbf73?source=shopsavvy&medium=product-page) | $16.98 | In Stock | 2024-05-20 (may have changed) | | | [WalmartPetRx](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/QIcq30q22gCYDqHEv5Mk?source=shopsavvy&medium=product-page) | $17.98 | In Stock | 2023-08-30 (may have changed) | | | [Countrysidepet.com](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/DZYZdJneVKKfDdddnzfv?source=shopsavvy&medium=product-page) | $31.98 | In Stock | 2023-08-30 (may have changed) | | | [VitalityMedical.com](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/eWdGG6aojfwZaX7xMS9E?source=shopsavvy&medium=product-page) | $40.54 | In Stock | 2022-08-10 (may have changed) | | | [Amazon](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/544dd65c-8bfe-1025-74e9-553321e85148?source=shopsavvy&medium=product-page) | $59.95 | In Stock | 2025-01-17 (may have changed) | | | [GGMyHome](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/XZMOB2EgbuOtJa58eUCF?source=shopsavvy&medium=product-page) | $66.42 | In Stock | 2023-08-30 (may have changed) | | | [Chewy](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/2fe54c93-7946-f94a-aec5-9d6b4ca82b9e?source=shopsavvy&medium=product-page) | $69.98 | In Stock | 2024-07-04 (may have changed) | | | [PetMeds](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/ZEkjwuTOdQkqaoQrLsxh?source=shopsavvy&medium=product-page) | $69.98 | In Stock | 2022-08-13 (may have changed) | | | [Vet Approved Rx](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/lPeguSqIQPy2VuoRx0i2?source=shopsavvy&medium=product-page) | $69.99 | In Stock | 2023-01-26 (may have changed) | | | [Walmart](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/1R78WgWaGYo2SlIeP3l0?source=shopsavvy&medium=product-page) | $73.95 | In Stock | 2023-05-15 (may have changed) | | | [Cali Pet](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/iLISiB6lhJYyQ7LnX5Qy?source=shopsavvy&medium=product-page) | $73.99 | In Stock | 2023-09-02 (may have changed) | | | [Shopisense](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/rCACXCDrt5fxS77p1uie?source=shopsavvy&medium=product-page) | $75.97 | In Stock | 2023-09-02 (may have changed) | | | [Hollywood Feed](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/z1TAFbsU734A7MYTSOr0?source=shopsavvy&medium=product-page) | $75.98 | In Stock | 2023-08-30 (may have changed) | | | [Lambert Vet Supply](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/jkA1e5pOkcF5n0Rdbstq?source=shopsavvy&medium=product-page) | $75.98 | In Stock | 2023-10-21 (may have changed) | | | [revival animal health](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/ZjX6jPsMIe2JqOe3vx3z?source=shopsavvy&medium=product-page) | $75.98 | In Stock | 2023-02-07 (may have changed) | | | [BaxterBoo.com](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/b8cbe407-2019-e3d1-824f-2435d6a01cde?source=shopsavvy&medium=product-page) | $77.98 | In Stock | 2025-01-17 (may have changed) | | | [1-800-petmeds](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/672b4038-0073-2a13-d825-885e3732d960?source=shopsavvy&medium=product-page) | $79.98 | In Stock | 2024-08-16 (may have changed) | 90-day returns · free shipping on $49+ | | [californiapetpharmacy.com](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/805f3c84-0a25-6948-81c9-1783b74ece98?source=shopsavvy&medium=product-page) | $79.98 | In Stock | 2024-08-16 (may have changed) | | | [Entirely Pets](https://shopsavvy.com/api/redirect/products/EdOXlJ13ebw84mvS1zID/offers/iXQfPdpeVIkE7OJ9mNkH?source=shopsavvy&medium=product-page) | $79.98 | In Stock | 2024-08-16 (may have changed) | | *Store terms are each retailer's standard return and shipping policy from ShopSavvy's retailer research; some products and categories differ, so check with the store before buying.* [See every retailer and the full price history on ShopSavvy](https://shopsavvy.com/products/k9-advantix-ii-flea-and-tick-prevention-for-dogs-%2811-20-lbs-6-doses%29) --- *About this page: ShopSavvy compares prices across thousands of retailers, aggregates expert and user reviews, and tracks price history to help you make informed buying decisions. 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