Hartz UltraGuard Flea & Tick Spray for Dogs, slide 1 of 1

Hartz UltraGuard Flea & Tick Spray for Dogs, 16-oz bottle

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Help your canine companion fight pesky fleas and ticks with this Hartz UltraGuard Flea & Tick Spray for Dogs! This flea and tick spray is suitable for dogs and puppies 12 weeks of age and older and combats fleas! This water-based tick and flea fighting spray is designed with a spray nozzle for easy application, so you can provide your furry friend with faster relief without all the hassle. Ticks and fleas can be a burden not only for your dog, but also for your entire household, but have no fear because when it comes to flea and tick control, Hartz has got your pal covered!

Key Benefits
  • Hartz UltraGuard Flea & Tick Spray can combat ticks as well as fleas, giving your dog companion the long-lasting protection she needs.
  • Flea and tick spray is specially designed for dogs and puppies 12 weeks of age and older.
  • Flea and tick spray is easy to apply to your furry friend and is water-based and gentle on skin and fur.
  • This easy-to-use flea and tick spray is gentle on your dog but tough on pesky pests.
  • Proudly made in the USA of domestic and imported materials to protect your dog companion from pesky fleas and ticks.

Use only on dogs. Causes moderate eye irritation. Avoid contact with eyes, skin, or clothing. Wash thoroughly with soap and water after handling. Prolonged or frequently repeated skin contact may cause allergic reaction in some individuals. Do not use on puppies under 12 weeks of age. Do not spray in eyes. To prevent harm to you or your pet, read entire label before use. Consult a veterinarian before using this product on debilitated, aged, pregnant, nursing, or medicated animals. Sensitivity may occur after using ANY pesticide product for pets. If signs of sensitivity occur, bathe your pet with mild soap and rinse with large amounts of water. If signs continue, consult a veterinarian immediately.

Important Information

Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.

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  • Item Number
  • Weight
    1.32 pounds
  • Lifestage

Active Ingredients: Tetrachlorvinphos 1.08%.


Recommend dosage for dogs:

Spray 25 - 35 strokes for small dog. Spray 30 - 40 for medium dogs. Spray 40 - 70 strokes for large dogs. More spray maybe needed for longhaired dogs.

  • Hold bottle upright about 6 inches from pet.

  • Spray lightly until the tips of pet's hair are moist. Keep spray out of pet's eyes.

  • Rub spray into animals coat. For long-haired dogs, ruffle fur to allow spray to reach skin.

  • After 10 minutes, dry dog with towel.

  • Comb and brush coat.

  • Repeat once a week.

  • If you see a tick, spray it directly.


Where is this product sourced from?

We source all our products from manufacturer approved distributors or directly from the manufacturers. Chewy takes pride in ensuring that our furry friends’ wellbeing is always our top priority. We have worked hard to partner with all of the manufactures to deliver 100% authentic products

About Hartz UltraGuard Flea & Tick Dog Sprays

Hartz - The Hartz Commitment

The Hartz Commitment

Hartz treasures the bond between you and your pet, and they’re committed to providing you with products designed to protect and rid your pets of fleas, ticks and mosquitoes year-round. Make your pet one of the 5 million furry family members Hartz helps keep pest-free and happy every year!

UltraGuard Flea and Tick Spray

Help your best friend ditch the itch from fleas and ticks with Hartz UltraGuard Flea and Tick Dog Spray. This easy-to-use spray kills and repels the nasty little biters on contact, so your pup can play his way through itch season without a scratch. The convenient wide-stream spray bottle makes application super easy, too.

Hartz - UltraGuard Flea and Tick Spray

Easy Flea and Tick Prevention and Control

Hartz UltraGuard Flea and Tick Spray for Dogs puts superior biting pest control in the palm of your hand. Just a few quick sprays from the easy-to-use bottle provides both preventative treatment and fast-acting flea and tick elimination on contact.


Fleas and ticks won’t stand a chance when you spray them with this effective spray - this formula is designed to kill on contact.


Spray your pet weekly during flea and tick season to prevent problems before they can start.


The sprayer dispenses a wide and gentle stream, so you can easily cover your dog from head to tail with little effort.

Choose the Protection That’s Right for You


UltraGuard Flea & Tick Dog Spray

UltraGuard Flea & Tick Plus Dog Spray

Targeted Pests

Flea & ticks.

Fleas & ticks on contact for up to 7 days.

Preventative Treatment

Can be used weekly for preventative treatment.

Prevents flea eggs from hatching for up to 30 days. Can be used weekly for preventative treatment.

Formula Enrichment


Fresh-scented, enriched formula with aloe to provide soothing relief from itchy, irritated skin.

Ages For Use

Made for dogs and puppies 12 weeks of age and older.

Made for dogs and puppies 12 weeks of age and older.

About Hartz

Hartz has been delivering exceptional consumer pet care products for over 90 years. Their goal is to provide innovative, trustworthy and affordable products that strengthen the bond between pets and people, and to offer the knowledge and support people need to better care for their pets. Their mission is a world where every pet can lead a healthy, happy and long life in a loving home.

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Rating: 3.7 of 5 stars 4 Reviews 4 Reviews 3.8 out of 5 Stars

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75% Recommend

75% of reviewersrecommend this product

Rating: 3.7 of 5 stars 3.8 / 5

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4 Reviews

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  • 5 out of 5 stars

    Hartz has been around for years.

    By on

    That is why they are still here. It is just as , or better than more expensive sprays!

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  • 1 out of 5 stars

    Cant tell if it works

    By on

    My dogs are still itching like crazy even though they get sprayed daily. I also don't appreciate the huge warning label on the back. Why isnt it safe for my dogs skin? I'm putting it on their fur which soaks into the skin. It doesnt make sense.

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  • 4 out of 5 stars

    Kills fleas softly

    By on

    When spray seems bigger fleas dies but tiny ones jumps away to avoid the spray

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  • 5 out of 5 stars

    Flea spray

    By on

    spray works great just had faulty sprayer didnt shut off and it leaked all over items in shipment, only one (ordered two) was faulty

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