Skip to content
K9 Advantix K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses

K9 Advantix

K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses

K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses is a vet-recommended topical flea, tick, and mosquito treatment for medium to large dogs. Priced at $48.89, it offers 4 monthly doses and is ideal for pet owners seeking reliable, long-term pest protection with fast-acting ingredients.

$48.89

● In stock

Buy at Budget Pet Care →

Price and availability may change. Click to see current details on Budget Pet Care.

Key features

  • Fast-acting: kills fleas in 12 hours
  • Monthly protection per dose
  • Repels mosquitoes and biting flies
  • Water-resistant after 24 hours
  • Easy topical application on back
  • Controls fleas, ticks, lice, and flies
  • Color-coded for 21-55 lb dogs

Pros

  • +Kills and repels multiple pests
  • +Long-lasting 30-day protection
  • +Trusted brand with vet approval
!

Cons

  • Not safe for cats
  • Requires skin contact for efficacy

About K9 Advantix K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses

What is K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses?

K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses is a monthly topical solution designed to protect dogs weighing between 21 and 55 pounds from fleas, ticks, mosquitoes, and biting flies. Formulated with active ingredients imidacloprid and permethrin, this treatment kills pests on contact and repels them before they bite. Each pack contains four easy-to-apply doses, providing a full three months of continuous protection. Sold by Budget Pet Care, it’s available for $48.89 with in-stock availability and potential savings through coupons.

Key features

  • Fast-Acting Protection — Begins killing fleas within 12 hours and ticks within 48 hours of application.
  • Monthly Defense — Provides up to 30 days of continuous protection per dose.
  • Repels Mosquitoes — Helps reduce the risk of mosquito-borne diseases like heartworm.
  • Water-Resistant Formula — Remains effective after swimming or bathing, though frequent washing may reduce efficacy.
  • Easy Topical Application — Applied directly to the skin along the dog’s back, minimizing mess and stress.
  • Targets Multiple Pests — Controls fleas, ticks, lice, biting flies, and mosquitoes.
  • Red Pack for Weight Range — Color-coded packaging ensures correct dosage for dogs 21–55 lbs.

Who is K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses for?

This product is ideal for owners of medium to large dogs who live in areas with high flea and tick activity or spend time outdoors. It’s especially beneficial for dogs that hike, visit wooded areas, or live in regions with mosquito seasons. Not suitable for cats or dogs under 21 lbs. Veterinarian-recommended for proactive, year-round parasite control.

How does K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses compare?

Compared to oral flea chews, K9 Advantix offers longer residual protection and repels pests rather than waiting for them to bite. Unlike generic spot-ons, it combines two active ingredients for broader coverage. It outperforms standard polypropylene collars in tick and mosquito defense. However, it’s not safe for households with cats, unlike some cat-safe oral options. At $48.89 for four doses, it’s competitively priced for its multi-month, multi-pest coverage.

🎯

Best use cases

  • Monthly flea prevention
  • Tick control in wooded areas
  • Mosquito season protection
  • Outdoor-active large dogs
  • Year-round parasite defense
🛒

Is K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses right for you?

Ideal for dog owners seeking reliable, monthly pest protection for medium to large breeds. No special skills needed—just apply topically once a month. Best for those in high-parasite regions. Consider oral chews if you have cats. Always match weight to dosage color. Check for active coupons to maximize savings.

How it compares: Outperforms basic flea collars and generic spot-ons with dual-action ingredients and mosquito repellency. Safer and longer-lasting than sprays. Not cat-safe, unlike some oral alternatives. Priced competitively for branded, multi-month protection.

Are There Active Budget Pet Care Coupons for This Product?

$25 Off ⚠️ Unverified
Expires in 4 days
Budget Pet Care

$25 OFF Your Order of $200 or More

••••••••

We earn a commission if you shop through this link.

35% Off ⚠️ Unverified
Expires Jun 1
Budget Pet Care

Budgetpetcare 35% OFF Coupon Seasonal Sale

••••••••

We earn a commission if you shop through this link.

$25 Off ⚠️ Unverified
Expires in 4 days
Budget Pet Care

$25 OFF Your Order of $200 or More

••••••••

We earn a commission if you shop through this link.

35% Off ⚠️ Unverified
Expires May 28
Budget Pet Care

Budgetpetcare 35% OFF Coupon Seasonal Sale

••••••••

We earn a commission if you shop through this link.

More from Budget Pet Care

?

Frequently Asked Questions

What does K9 Advantix do for large dogs?

K9 Advantix kills fleas, ticks, mosquitoes, and biting flies on dogs 21-55 lbs. It repels pests before they bite and provides month-long protection per dose with topical application.

Does K9 Advantix work on ticks and fleas?

Yes, it kills fleas within 12 hours and ticks within 48 hours. It also prevents reinfestation by killing lice and repelling biting flies and mosquitoes.

How often should I apply K9 Advantix?

Apply one dose monthly for continuous protection. Each 4-dose pack covers four months. Reapply after frequent swimming or heavy shampooing to maintain effectiveness.

Is K9 Advantix safe for all dogs?

It's safe for dogs 21-55 lbs but not for cats or dogs under 21 lbs. Avoid use on sick, elderly, or medicated dogs without vet approval due to permethrin sensitivity.

Can I use K9 Advantix with other treatments?

Consult your vet before combining with other flea or tick products. Avoid use with medications that increase seizure risk or in households with cats due to permethrin toxicity.

How much does K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses cost?

K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses is $48.89 at Budget Pet Care. Prices may change — click through to Budget Pet Care for the latest.

Is K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses in stock at Budget Pet Care?

Yes, K9 Advantix Large Dogs 21-55 Lbs (Red) 4 Doses is currently in stock at Budget Pet Care.

Are there coupon codes for Budget Pet Care?

Yes — Love Those Deals currently tracks 4 active Budget Pet Care coupons. See the coupons section on this page to copy a code before checkout.

Specifications

Brand
K9 Advantix
Product Type
Animals & Pet Supplies > Pet Supplies > Pet Flea & Tick Control
Category
Animals & Pet Supplies > Pet Supplies > Pet Flea & Tick Control
SKU
3914
GTIN
891962001514
MPN
K9-Advantix-67
Last updated Apr 28, 2026