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

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About This Item

Details

  • Water-resistant flea and tick collar is an easy alternative to traditional topical flea treatments.
  • Works for an impressive 7 months to effectively kill and repel fleas and ticks.
  • Also prevents flea eggs from hatching to stop the flea life cycle and prevent re-infestation.
  • Breakaway design will come apart if your cat gets caught on something.
  • Adjustable design can be cut to fit your cat’s neck, and it features a clean, fresh scent.

Ingredients

Instructions

Size

FAQ

Learn More About Hartz From Our Team of Experts

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.

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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Compare Similar Items

Hartz
UltraGuard Plus Flea & Tick Collar for Cats, 1 Collar (7-mos. supply)
Hartz
UltraGuard Plus Flea & Tick Collar for Cats, 1 Collar (7-mos. supply)
$5.57 Chewy Price
($5.57/ea)
Rated 3.8 out of 5 stars
1.3KReviews
Health Feature     
Anti-Parasitic, Pest Control
Anti-Parasitic
Pest Control
Anti-Parasitic, Pest Control
Pest Control
Collar Width     
3/8 inch
3/8 inch
0.99 inch
3/8 inch
Collar Type     
Flea & Tick
Flea & Tick
Flea & Tick
Flea & Tick
Flea & Tick
Flea & Tick
Sourced From     
United States
Season     

Questions & Answers

21 Customer Questions


What are the active ingredients in this cat tick flea collar how can I view all ingredients in any of your cat flea tick products to compare

Answer by HeavenMay 19, 2023
Tetrachlorvinphos, (S) - Methoprene are the active ingredients in this cooler. All of the active ingredients are on the first picture shown.

Are these manufactured in the USA?

Answer by ChewyApr 30, 2019
This collar is made in the United States.

Does it have a break away mechanism?

Answer by ChewyFeb 28, 2019
This collar is designed with a break-away mechanism, for safety.

Does this collar have an odor?

Answer by ChewyMay 14, 2019
While this collar may have an odor to it, avoid breathing vapors. If inhaled, move to fresh air.

3.8
Rated 3.8 out of 5 stars
1308 Ratings

561 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 Steve on Oct 6, 2025

the collar doesn't work

I followed the instructions on the package. I put the first collar on Drake and waited two weeks nothing happened. I placed the other collar on Drake and still no

I followed the instructions on the package. I put the first collar on Drake and waited two weeks nothing happened. I placed the other collar on Drake and still no results. After talking to vet about it she stated that brand of collar is so inexpensive and used a lot for fleas it has become ineffective. Someone on your end messed up the description of the item I bought, I bought flea collars not lickable dog treats


Rated 1 out of 5 stars
By Melissa on Oct 6, 2025

Isn’t working in the slightest

I’m shocked, honestly. Both of my cats spend the entire day biting themselves, even after wearing the collars for some days. I thought maybe it would take a bit

I’m shocked, honestly. Both of my cats spend the entire day biting themselves, even after wearing the collars for some days. I thought maybe it would take a bit of time before the collars started working, but they haven’t helped in the slightest.


Rated 5 out of 5 stars
By darlene on Sep 16, 2025

Hartz has been around awhile

It doesn’t matter how much you clean, it seems living next to the woods can get fleas into the house. So to protect XENA we use Hartz brand flea collars. She’s an

It doesn’t matter how much you clean, it seems living next to the woods can get fleas into the house. So to protect XENA we use Hartz brand flea collars. She’s an indoor cat, and the other pets have moved. So Hartz works well. This collar replaces the one she has on and we are set for spring now. I like being prepared!


Rated 1 out of 5 stars
By Kathy on Sep 14, 2025

Flea meds

I’m starting to wonder if Chewy is getting expired flea meds. Everything I’ve ordered on here in the past year has failed miserably to do what it claimed

I’m starting to wonder if Chewy is getting expired flea meds. Everything I’ve ordered on here in the past year has failed miserably to do what it claimed


Rated 1 out of 5 stars
By Mary on Jun 14, 2025

Not working at all......

I bought 10 of these for my cats and all the barn kittens that were born this year.......and they are all STILL scratching and digging at fleas! My inside cat is

I bought 10 of these for my cats and all the barn kittens that were born this year.......and they are all STILL scratching and digging at fleas! My inside cat is blind and doesn't go out much at all, so he never has flea issues. I buy him a collar anyway for preventative measures......and now he's scratching and has fleas!! I have a professional spray my yard for fleas every year also, so I know I don't have an infestation out there. Never had issues until now and these are not helping at all. They have had them al.ost 2 weeks now. I will not buy these again.


Rated 5 out of 5 stars
By Judy-Anne on Oct 18, 2025

Consistently amazing!

I love the fact that they don’t treat you and ur baby as a number their customer service is exemplary

I love the fact that they don’t treat you and ur baby as a number their customer service is exemplary


Rated 1 out of 5 stars
By Elaine on Jul 25, 2025

Did not work

I purchased this because it wasn'y to expensive as a trial run my cat is indoor/outdoor and the chances to lose it were high. no she didnt lose it, .It caused her

I purchased this because it wasn'y to expensive as a trial run my cat is indoor/outdoor and the chances to lose it were high. no she didnt lose it, .It caused her to become Lethargic and still continue to scratch & chewit didn't work..........NO I WOULD NOT RECOMMEND


Rated 5 out of 5 stars
By Bonnie on Aug 17, 2025

Speed that I got the order home

The horse cookies for my horse of course, were remarkably good . My horse loved them. And the flea collars for my cats were great and work well. Thank you for being

The horse cookies for my horse of course, were remarkably good . My horse loved them. And the flea collars for my cats were great and work well. Thank you for being reliable and FAST


Rated 1 out of 5 stars
By anne on Sep 15, 2025

Very bad product

It’s not working no results my cat continue to have fleas these products is not efficient. I am very disappointed.

It’s not working no results my cat continue to have fleas these products is not efficient. I am very disappointed.


Rated 1 out of 5 stars
By mary on Oct 17, 2025

Awful

My animals are scratching more than ever. I may have to go back to petfriendly.com.

My animals are scratching more than ever. I may have to go back to petfriendly.com.