K9 Advantix II Large Dog 21–55 lbs – Flea and Tick | 2 Doses

K9 Advantix II Large Dog 21–55 lbs – Flea & Tick Protection – 2 Doses

Advanced Flea and Tick Protection for Active Large Dogs 21–55 lbs

K9 Advantix II Large Dog 21–55 lbs Flea Treatment 2 Doses is a vet-recommended topical solution that delivers effective flea and tick control for large dogs. Each dose provides fast, reliable protection against parasites, keeping your dog healthy and comfortable.

Formulated for dogs weighing 21–55 lbs, this spot-on treatment works through direct contact, offering fast-acting, long-lasting protection. Easy application ensures your dog stays safe, parasite-free, and comfortable every month.

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Key Benefits

• Reliable flea and tick protection for large dogs 21–55 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 formula for easy application
• 2-dose package supports continuous monthly protection
• Effective even on thick or dense coats common in large breeds
• Ideal for active dogs with higher outdoor exposure

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Why Choose K9 Advantix II Large Dog 21–55 lbs

Perfect for large dogs that hike, run, or spend time in wooded or grassy areas

• 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 protection per dose
• Waterproof after 24 hours for long-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 Large Dog 21–55 lbs kills fleas and ticks at all life stages. It eliminates adult fleas, larvae, and eggs to prevent new infestations and maintain a clean environment for your dog.

In addition to fleas and ticks, it also repels mosquitoes and biting flies, offering broader protection for large, active dogs.

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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 protection

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Product Details

Brand: K9 Advantix II

Manufacturer: Bayer Animal Health / Elanco

Pet Type: Dog

Pet Size: Large (21–55 lbs)

Form: Topical liquid

Quantity: 2 doses

Protection Duration: Up to 30 days per dose

Minimum Age: 7 weeks and older

EPA Reg. No.: 11556-143

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Manufacturer Information (Brand Transition Notice)

Originally developed by Bayer Animal Health, now manufactured and distributed by Elanco. Formula, effectiveness, and SKU remain identical. Packaging may vary but both versions are 100% authentic and identical in quality.

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What’s Included

2 tubes (2-dose supply) of K9 Advantix II Large Dog 21–55 lbs

New, sealed, and factory fresh

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You May Also Like

• K9 Advantix II Small Dog 4–10 lbs – Ideal for toy and small breeds needing fast-acting flea and tick protection tailored to their lower body weight.
• K9 Advantix II Medium Dog 11–20 lbs – Designed for mid-size dogs that require balanced, weight-specific parasite protection for indoor and outdoor activity.
• K9 Advantix II Extra Large Dog Over 55 lbs – Best for giant breeds with high outdoor exposure and thicker coats requiring stronger full‑body coverage.
• Seresto Large Dog Flea & Tick Collar – A long-lasting, low‑maintenance option providing up to 8 months of continuous protection for active large breeds.
• Frontline Plus Large Dog 45–88 lbs – A suitable alternative topical treatment for multi‑pet households needing rotation or separate protection for another dog.

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Warnings & Safety

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

Keep out of reach of children

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Performance & Benefits

K9 Advantix II provides fast, effective flea and tick control for large dogs. Monthly use prevents reinfestation and ensures your dog’s comfort and overall health.

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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.