K9 Advantix II: Vet-Trusted Flea and Tick Protection

K9 Advantix II provides vet-recommended flea, tick, and mosquito protection for dogs. Formulated for sizes from 4 to over 55 lbs., our monthly topical treatments kill and repel pests for up to 30 days. Waterproof and fast-acting, K9 Advantix II keeps dogs safe and comfortable outdoors.

K9 Advantix II Usage

Broad Protection

Kills and repels fleas, ticks, and mosquitoes effectively.

Fast-Acting

Starts working within 12 hours of application.

Waterproof Formula

Remains effective after bathing or swimming.

Size-Specific

Tailored doses for small to extra-large dogs.

Monthly Application

Easy-to-apply drops ensure consistent 30-day protection.

Vet-Recommended

Trusted by veterinarians for reliable pet safety.

K9 Advantix II Bestsellers

Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 2-Mo Supply (Packaging may vary)

K9 Advantix II Large Dog (21-55 lbs) 2-month supply offers vet-recommended flea, tick, and mosquito protection. Fast-acting and waterproof, the monthly drops kill pests within 12 hours and repel for 30 days. Easy to apply, it ensures dogs stay itch-free and safe outdoors.

XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 2-Mo Supply

K9 Advantix II XL Dog (over 55 lbs) 2-month supply provides vet-trusted flea, tick, and mosquito protection. Waterproof and fast-acting, the monthly drops kill pests in 12 hours and repel for 30 days. Easy to apply, it keeps large dogs comfortable and pest-free.

Medium Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 11-20 lbs. | 2-Mo Supply

K9 Advantix II Medium Dog (11-20 lbs) 2-month supply delivers vet-recommended flea, tick, and mosquito protection. Fast-acting and waterproof, the monthly drops kill pests in 12 hours and repel for 30 days. Easy to apply, it ensures comfort and safety for active dogs.

Why Customers Choose K9 Advantix II

K9 Advantix II values and considers the needs of its customers and hopes to please everyone.

Proven Effectiveness

Kills pests and prevents infestations with one treatment.

Pet Comfort

Keeps dogs itch-free and safe outdoors.

Convenient Dosing

Simple monthly drops for hassle-free protection.

Any question about our K9 Advantix II?
Feel free to contact us anytime.

K9 Advantix II Company Values

K9 Advantix II is dedicated to dog safety and comfort. Our values emphasize protection, reliability, and ease, ensuring pest-free pets.

Protection: Kills fleas, ticks, and mosquitoes.
Reliability: Vet-trusted, fast-acting formula.
Ease: Simple monthly topical application.

Safety: Waterproof and size-specific doses.
Comfort: Prevents itching and irritation.
Trust: Veterinarian-recommended pest control.

Photos by Our Happy Clients

Sales per year

30000 +

Reviews

8000 +

Partnerships

345 +

Years of experience

9 +

K9 Advantix II Reviews

Our satisfied customers have found K9 Advantix II solutions to be remarkably effective and user-friendly, as evidenced by the following reviews

I used the Large Dog 2-month supply for my 40-lb lab, and it’s fantastic! Applied it once, and within a day, fleas were gone. He’s been hiking with no ticks, even after swimming. The waterproof formula is a game-changer, and he’s so much happier without scratching! – Kansas City, KS

Sophie Bennett

The Small Dog 6-month supply saved my 8-lb terrier! I applied the drops monthly, and no fleas or ticks appeared, even during park visits. It’s easy to use, doesn’t irritate her skin, and the vet-recommended formula gives me confidence. She’s protected and comfortable! – St. Louis, MO

Emma Carter

My 60-lb husky loves the outdoors, so I tried the XL Dog 2-month supply. It repels mosquitoes and kills ticks fast. After a lake trip, he stayed pest-free, and the waterproof drops held up. Easy to apply, and he’s itch-free and happy! – Omaha, NE

Lily Thompson

Do you need a K9 Advantix II

Contact our knowledgeable team at for a consultation, where we’will provide customized guidance and recommendations tailored to your needs.