K9 Advantix II for Extra Large Dogs (over 55 lbs) Blue Box

Monthly Topical Flea, Tick & Mosquito Defense

Product Description

K9 Advantix II for Extra Large Dogs provides comprehensive monthly protection against fleas, ticks, mosquitoes, biting flies, and lice through waterproof topical application. This veterinarian-recommended formula combines imidacloprid, permethrin, and pyriproxyfen to kill parasites on contact, break flea life cycles, and provide four weeks of broad-spectrum defense for dogs over 55 lbs.

Ingredients

Active Ingredients

Imidacloprid 8.8%, Permethrin 44.0%, Pyriproxyfen 0.44%

Inactive Ingredients

Propylene glycol, benzyl alcohol, polyethylene glycol, and other inert ingredients

Variants/Types

How to Use

Dosage & Administration Instructions

• Weight Verification: Confirm the dog weighs over 55 lbs for the extra-large formulation.
• Tube Preparation: Cut pouch, remove tube, peel foil, twist cap to break seal.
• Application: Part fur from shoulders to tail base, apply directly to skin.
• Distribution: Squeeze contents in 3-4 spots to prevent run-off from a single location.
• Monthly Schedule: Reapply every four weeks for continuous year-round protection.

Additional Information

Precautions

• Age Restriction: Only use on dogs and puppies seven weeks or older.
• Species Warning: Never use on cats; permethrin is extremely toxic to felines.
• Child Safety: Keep children away from treated dogs until the application site dries completely.
• Skin Sensitivity: Monitor for irritation; consult a veterinarian if reactions persist beyond three days.
• Aquatic Toxicity: Prevent treated dogs from entering surface water for 48 hours after application.

Possible Side Effects

• Skin Irritation: Redness, scratching, or discomfort may occur at the application site.
• Gastrointestinal Upset: Vomiting or diarrhea reported in rare cases following application.
• Hair Changes: Greasy or stiff hair texture may develop temporarily at the site.
• Lethargy: Temporary decreased energy levels may be observed occasionally in treated dogs.

Benefits

• Contact Kill: Eliminates parasites on contact without requiring bites or feeding.
• Broad Spectrum: Controls fleas, ticks, mosquitoes, biting flies, and lice effectively.
• Flea Lifecycle: Kills all flea stages, including eggs, larvae, and adults, completely.
• Waterproof Formula: Maintains effectiveness after bathing, swimming, or rain exposure.
• Four-Week Protection: Single application provides continuous defense for full month.

Shipping & Return

We offer ground, express, priority, and international delivery; see our shipping policy for details.

For return instructions or product concerns, please refer to our detailed refund policy.

Frequently Asked Questions

Q1: How quickly does K9 Advantix II start eliminating fleas and ticks on extra-large dogs?

Ans: K9 Advantix II begins killing adult fleas within twelve hours of application and ticks within 48 hours. The contact-kill action means parasites die upon contact with treated fur, preventing biting and reducing disease transmission risk throughout the four-week protection period.

Q2: Can my extra-large dog swim or bathe after applying K9 Advantix II?

Ans: Yes, K9 Advantix II features a waterproof formula that maintains effectiveness after bathing, swimming, or rain exposure. Wait at least 24 hours after application before water activities to ensure optimal product bonding to skin oils and hair follicles.

Q3: Is K9 Advantix II safe to use on dogs over 55 lbs with sensitive skin conditions?

Ans: K9 Advantix II may not be suitable for dogs with sensitive skin conditions. While generally safe for healthy dogs, some may experience localized irritation, including redness or scratching. Consult your veterinarian before use if your dog has known skin sensitivities.

Q4: What precautions should I take when applying K9 Advantix II around cats or other pets?

Ans: Keep cats away from treated dogs for at least 24 hours after application. Permethrin is extremely toxic to cats and can be fatal if cats contact treated areas before the product dries completely on the dog's fur.

Q5: Why am I seeing more fleas after treating my extra-large dog with K9 Advantix II?

Ans: Seeing more fleas initially is normal as dying fleas rise to the coat surface and become more visible. Environmental fleas may continue jumping on your dog for up to 30 days until the complete flea lifecycle is broken in your home environment.