K9 Advantix II Medium Dog 11–20 lbs – Flea & Tick Treatment | 2 Doses

K9 Advantix II Medium Dog 11–20 lbs – Flea & Tick Treatment – 2 Doses

Fast-Acting Flea and Tick Protection for Medium Dogs 11–20 lbs

K9 Advantix II Medium Dog 11–20 lbs Flea Treatment 2 Doses is a vet-recommended topical solution designed to provide effective flea and tick control for medium-sized dogs. Each dose supports comprehensive parasite management, helping protect your dog from fleas, ticks, and related discomforts.

Formulated for dogs weighing 11–20 lbs, K9 Advantix II works through direct contact, offering fast-acting, long-lasting protection. Its easy spot-on application keeps your dog safe, comfortable, and parasite-free month after month.

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Key Benefits

• Reliable flea and tick protection for medium dogs 11–20 lbs
• Kills fleas and ticks on contact, preventing bites
• Targets adult fleas, eggs, and larvae to break the pest life cycle
• Lightweight, fast-acting topical solution for easy application
• Supports continuous monthly protection with 2-dose package
• Provides added defense against mosquitoes and biting flies
• Helps with broad-spectrum parasite prevention for outdoor and active dogs

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Why Choose K9 Advantix II Medium Dog 11–20 lbs

• Kills fleas and ticks on contact – no biting required
• Eliminates adult fleas, larvae, and eggs for full protection
• Breaks the flea and tick life cycle to prevent reinfestation
• Up to 30 days of continuous protection per dose
• Fast-acting formula begins working immediately
• Waterproof after 24 hours for lasting effectiveness
• Easy topical application for stress-free use
• Suitable for indoor and outdoor dogs

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How It Works

K9 Advantix II Medium Dog 11–20 lbs uses a contact-based formula that targets fleas and ticks at all life stages. It kills adult fleas and ticks while also eliminating eggs and larvae, preventing new infestations and maintaining a clean, healthy environment for your medium-sized dog.

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How to Use

• Apply one tube directly to the skin at the base of your dog’s neck
• Part the fur and place the tip of the tube on the skin
• Squeeze the entire contents onto one spot
• Do not rub in
• Repeat monthly for continuous flea and tick protection

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Product Details

Brand: K9 Advantix II

Manufacturer: Bayer Animal Health / Elanco

Pet Type: Dog

Pet Size: Medium (11–20 lbs)

Form: Topical liquid

Quantity: 2 doses

Protection Duration: Up to 30 days per dose

Minimum Age: 7 weeks and older

EPA Reg. No.: 11556-142

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Manufacturer Information (Brand Transition Notice)

This product was originally developed and manufactured by Bayer Animal Health. Following Bayer's sale of the production rights, the product is now manufactured and distributed by Elanco.

The formula, effectiveness, and SKU remain identical. Packaging may vary and could include either Bayer or Elanco branding depending on the production batch. Both versions are 100% authentic and identical in quality and performance.

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What’s Included

2 tubes (2-dose supply) of K9 Advantix II Medium Dog 11–20 lbs

New, sealed, and factory fresh

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You May Also Like – Extra Protection Options

• Capstar Flea Control Oral Tablets for Dogs — safe to use together with K9 Advantix II. Capstar provides rapid relief by killing active fleas within 30 minutes, while Advantix II maintains long‑lasting protection. Many owners use Capstar on day one to speed up results.
• Seresto Flea & Tick Collar for Dogs — can be combined with K9 Advantix II for dogs that spend a lot of time outdoors, in tall grass, or wooded areas. The collar adds an extra 8‑month protective layer, which is helpful during peak tick season.
• Frontline Plus Flea & Tick Treatment for Dogs — should not be applied at the same time as K9 Advantix II, since both are topical treatments. However, many pet owners keep Frontline as a backup option or use it for a second dog to ensure all pets in the household stay protected.
• Capaction (PetArmor) Oral Flea Tablets — also safe to use alongside Advantix II. Ideal to keep on hand if your dog visits parks, boarding facilities, or interacts with other animals. Helps quickly stop sudden flea flare‑ups between regular monthly treatments.

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Warnings & Safety

• For external use only
• Do not use on puppies under 7 weeks of age
• Avoid contact with eyes or mouth
• Wash hands after application
• Consult a veterinarian if your dog has health conditions

Keep out of reach of children

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Performance & Benefits

K9 Advantix II delivers fast, effective flea and tick control for medium dogs. Consistent monthly use helps prevent reinfestation, maintaining your dog’s comfort, reducing parasite-related irritation, and supporting overall canine wellness.

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Disclaimer:

This product is intended for animal use only. Always follow label instructions. Results may vary depending on environment and level of infestation.

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Authenticity Guarantee:

All K9 Advantix II products sold on our website are 100% authentic, sealed, and sourced from authorized distributors. Each unit is stored properly to ensure safety and effectiveness.