Is K9 Advantix safe?
Andrew Mclaughlin
Updated on April 28, 2026
Yes. Flea and tick treatments, including K9 Advantix and Frontline Plus, are incredibly safe. Not only are they veterinarian recommended, but they are also backed by the United States Environment Protection Agency.
What is Advantix II used for?
Veterinarian-recommended K9 Advantix II kills fleas, ticks, mosquitoes and lice, and repels biting flies. Now you can help your dog fight these pesky pests through contact—no biting required. Convenient and easy to use, K9 Advantix II is for dogs and puppies 7 weeks of age or older.
What are the side effects of K9 Advantix II?
K9 Advantix and K9 Advantix II contain different types of ingredients to control fleas and ticks….Symptoms of an allergic reaction to this product may include:
- Sensitivity at the application site.
- Skin irritation.
- Scratching the skin.
- Discomfort.
- Redness.
- Gastrointestinal discomfort.
- Lethargy.
Is Advantix safer than Seresto?
Which is Safest? Advantix has fewer side effects and is safer to use around others, including other pets and humans in the household. Seresto can pose a health concern, especially in multi-dog households, since there is a possibility of the other pets coming in contact with the collar.
Does Advantix cover heartworm?
Advantix when applied properly, provides 30 days of protection against fleas and ticks. Advantage Multi has also been on the market for several years, it is effective in treating fleas (and preventing them), and effective in preventing heartworm, whipworm, hookworm, and roundworm.
How often can I give my dog Advantix?
A single application of K9 Advantix® II remains effective for four weeks. However, if the dog has a severe infestation, re-treatment within a month may be necessary; dogs should not be re-treated more than once every seven days.
Is Advantix bad for your dog?
The 6-pack of Bayer K9 Advantix II flea and tick prevention for extra-large dogs is a broad-spectrum, veterinarian-recommended dog flea and tick prevention that also kills and repels mosquitoes, a benefit not found in many other flea and tick products.
Why is my dog still itching after Advantix?
It’s fairly typical after you’ve applied Itch Flea for there to be a period of hyperactivity amongst the fleas as the product takes effect, and this can cause an increase in itching. It should settle down though after 24 hours.
What does K9 Advantix II kill?
K9 Advantix ® II kills and repels fleas, ticks and mosquitoes through contact, meaning they don’t have to bite your dog to die. K9 Advantix ® II is also vet-recommended, so you can repel the bugs and propel the day. K9 Advantix ® II – Protect your dog from fleas, ticks and mosquitoes too.
How long does it take for Bayer K9 Advantix to work?
Just one application of Bayer K9 Advantix II flea and tick prevention for extra-large dogs starts working to kill fleas within 12 hours, is waterproof after 24 hours, and continues to work to kill fleas, ticks and mosquitoes for up to 30 days, even after a bath or swimming. We recommend the use of a grooming shampoo designed specifically for pets.
What are the main ingredients in the idk9 Advantix II?
K9 Advantix II has three main ingredients that make this product efficient. They enable it to fight different types of insects and parasites. They include permethrin, pyriproxyfen, and imidacloprid.
What is the difference between K9 Advantix and frontline?
K9 Advantix II vs. Frontline Plus Tick and Flea Control Frontline and Advantix are two famous and competitive products in the market. They work similarly, but the only difference comes in the active ingredients K9 Advantix II uses permethrin and imidacloprid, while Frontline uses fipronil.