Hartz UltraGuard Flea & Tick Collar for Cats, 1 Collar (7-mos. supply), Purple

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About This Item

Details

  • 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.

Ingredients

Instructions

Size

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

For more than 95 years, Hartz has been dedicated to creating products that show pets the same unconditional love they give us. Hartz is a leader in quality, innovative products for dogs and cats, including Oinkies, Delectables, UltraGuard, Nature’s Shield, Home Protection, Comfitables, and Groomer's Best brands. Through the Hartz Loving Paws shelter outreach program, Hartz is committed to helping animal welfare organizations that protect and care for pets until they find their forever homes.

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Frequently bought together

Questions & Answers

21 Customer Questions

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 Chewy • Dec 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 Chewy • May 04, 2020
This collar will begin to kill fleas and ticks immediately.

does it work on ear mites?

Answer by Chewy • Dec 14, 2019
This flea and tick collar is not effective against ear mites.

can a flea collar be used safely in addition to another kind of flea and tick treatment like Revolution Plus?

Answer by Chewy • Jun 14, 2020
Do not use this product on cats simultaneously or within 30 days before or after treatment of other flea and tick products.
Reviews
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4.0
Rated 4 out of 5 stars
1321 Ratings
Terms & Conditions

482 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 1 out of 5 stars
By Stephanie on Dec 17, 2025

did not work

I rescued these kittens from outside in the cold. I took them to the vet and had all shots/treatments done. They ended up having fleas badly so with use of the shampoo

I rescued these kittens from outside in the cold. I took them to the vet and had all shots/treatments done. They ended up having fleas badly so with use of the shampoo from the vet it did help but I was worried they would come back so I bought these. They still ended up with fleas with these collars on. Stay Away from Hertz brand!

Rated 5 out of 5 stars
By mary on Jan 1, 2026

End of summer elimination of fleas & eggs.

I finished the cats' summer with new Hartz UltraGuard flea collars for each. They sleep on my bed, and the collars also eliminate eggs and flea hatchlings in the

I finished the cats' summer with new Hartz UltraGuard flea collars for each. They sleep on my bed, and the collars also eliminate eggs and flea hatchlings in the bedding.

Rated 5 out of 5 stars
By Hugh on Dec 2, 2025

Purple Color

I have two cats that could be twins (they were from different litters), so having an effective flea collar in more than one color is crucial for our family knowing

I have two cats that could be twins (they were from different litters), so having an effective flea collar in more than one color is crucial for our family knowing which cat is which.

Rated 5 out of 5 stars
By christopher on Nov 16, 2025

The color of the flea collar

Bought 2 collars. One for my smokey and one for a stray i take care of. Great collars and rhe purple color is a nice look. Doesnt irritate them. Would buy again

Bought 2 collars. One for my smokey and one for a stray i take care of. Great collars and rhe purple color is a nice look. Doesnt irritate them. Would buy again

Rated 1 out of 5 stars
By 4HMom on Nov 2, 2025

Still fleas

I was hoping for the price it would be an inexpensive option. Unfortunately he still have some creepy crawlers on him. So to the vet for a flea bath it is.

I was hoping for the price it would be an inexpensive option. Unfortunately he still have some creepy crawlers on him. So to the vet for a flea bath it is.

Rated 5 out of 5 stars
By Mark on Nov 9, 2025

A utoship

I am getting 2 day mail service which is the best I have gotten from anyone. How abou5 teaching USPS how to DO their job.

I am getting 2 day mail service which is the best I have gotten from anyone. How abou5 teaching USPS how to DO their job.

Rated 1 out of 5 stars
By Christel on Sep 2, 2025

Cat had an Allergic reaction

The cat got bumps all over his poor little neck after about a week of wearing the collar and as soon as I removed it, his bumps began to disappear. It helped with

The cat got bumps all over his poor little neck after about a week of wearing the collar and as soon as I removed it, his bumps began to disappear. It helped with his fleas, but apparently his skin had a disagreement with it.

Rated 5 out of 5 stars
By Jean on Nov 26, 2025

New flea collars

I need flea collars for the both of them, the ones I used before was no longer so I tried these

I need flea collars for the both of them, the ones I used before was no longer so I tried these

Rated 5 out of 5 stars
By Roseann on Jul 29, 2025

Works all summer

I purchased for my semi feral outdoor cats, and it kept the ticks off my cats all summer. Usually I have to pick at least a dozen ticks off daily without, but they

I purchased for my semi feral outdoor cats, and it kept the ticks off my cats all summer. Usually I have to pick at least a dozen ticks off daily without, but they didn't have a single one all summer and fall with this collar. It also breaks away very easily if they get caught on something.

Rated 5 out of 5 stars
By Elizabeth on Sep 30, 2025

Good price

My cat loves going outside in the summer time . This collar works well to keep the ear mites off. Lasts a few months too!

My cat loves going outside in the summer time . This collar works well to keep the ear mites off. Lasts a few months too!