Hartz UltraGuard Flea & Tick Collar for Cats

By Hartz
Rated 2.9859 out of 5 stars


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$3.58 Chewy Price
Or save an extra 5% with
$3.40Autoship Price

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.
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FREE 1-3 day delivery on first-time orders over $25

About This Item


  • Fights fleas and ticks for up to 7 months—can be worn with your cat’s regular collar.
  • Fresh scented collar won’t bother your finicky feline’s nose.
  • Water-resistant—no worries if your cat faces an occasional run in the rain.
  • Features a breakaway snap to keep your cat safe from getting snagged.
  • For use on adult cats and kittens ages 12 weeks and older.

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Frequently Bought Together

PetArmor CapAction Flea Tablets for Cats, 6 Tablets
Rated 3.8354 out of 5 stars
$27.00Chewy Price
Total Price: $36.02

About Hartz Ultraguard Cat Collars

Why Choose a Hartz Flea & Tick Collar?

Hartz Flea & Tick Collars provide convenient, mess-free flea and tick protection that is easy to put on and adjust for comfort. These flea and tick collars protect for up to 7 months, and they can be worn alongside your cat’s regular collar.

How Hartz Flea & Tick Collars Work

Hartz Flea & Tick Cat Collars contain active ingredients that are slowly released and spread over your cat’s body. These active ingredients kill and repel fleas and ticks to keep your cat pest-free and happy.

Long-Lasting Flea & Tick Protection

Pest Protection

Hartz UltraGuard cat collars kill and repel fleas and ticks and can be worn with your cat’s regular collar.

Full Body Protection

The active ingredients spread across your cat’s skin, providing continuous, full-body coverage for up to 7 months.

Breakaway Design

A breakaway release snap helps keep the collar from getting caught on things like branches and fences for safety.

Don’t Settle for Stiff

Hartz UltraGuard ProMax is a soft and flexible flea and tick collar that will keep your cat comfortable and protected.

About Hartz

Hartz has been delivering exceptional pet care products for over 95 years. The full range of pet care products are dedicated to the health and well-being of cats and dogs with a focus on making life with pets richer, easier, and more joyful.

Shop Hartz

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Top IngredientsActive Ingredient: Tetrachlorvinphos (14.55%)Tetrachlorvinphos 14.55%,Other Ingredients 85.45%Tetrachlorvinphos, (S) - MethopreneTetrachlorvinphos, (S) - Methoprene
LifestageKitten, AdultAdultAdultAdult
Collar TypeFlea & TickFlea & TickFlea & TickFlea & Tick

Questions & Answers

21 Customer Questions

I lost my cat how do I cancel my subscription
Answer by MelanieJul 22, 2023
To cancel the autoship, you'll hover over "your account" and select the option that states "manage autoship". When you are on this screen you will select the autoship that you would like to cancel. Once selected, you'll scroll all the way to the bottom and there will be a button to cancel the autoship.

My cats groom each other, especially about the face and head. If they lick this flea collar can it be dangerous to their health?
Answer by ChewyDec 25, 2019
Since grooming is a natural instinct, all Hartz flea and tick products are formulated with this in mind. If used as directed, no problems should occur if your pet was to groom itself while using this product. Licking the collar directly may cause gastrointestinal upset, or an increase in salivation/drooling.

Can it kill fleas that are already on the cat?
Answer by ChewyMay 04, 2020
This collar will begin to kill fleas and ticks immediately.

does it work on ear mites?
Answer by ChewyDec 14, 2019
This flea and tick collar is not effective against ear mites.

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Rated 2.9859 out of 5 stars
284 Ratings
Would recommend to a friend

278 Customer Reviews