Hartz Ultra Guard ProMax Flea & Tick Collar for Dogs, 2 collars (12-mos. supply)

By Hartz
Rated 4.1551 out of 5 stars
Slide 1 of 11
Hartz Ultra Guard ProMax Flea & Tick Collar for Dogs, Gray, 2 collars (12-mos. supply) slide 1 of 11
Slide 1 of 11
Hartz Ultra Guard ProMax Flea & Tick Collar for Dogs, Gray, 2 collars (12-mos. supply) slide 1 of 11
Color: Gray

$31.65Chewy Price
$32.97Chewy Price
$30.07Autoship Price
Autoship (Save an extra 5%)
Choose Autoship at checkout for regular deliveries.

Why Autoship?

  • FREE access to chat with licensed vets 7 days a week.
  • Save 5% on all future Autoship orders.
  • No fees, no commitments - cancel Autoship anytime.

In Stock
FREE 1-3 day shipping over $49

About This Item

  • Made with a soft, flexible texture and latches with rounded edges to help ensure a comfortable fit.
  • Designed with two buckles to help ensure it remains in place, yet still easy for you to remove if necessary.
  • Strong enough to provide your dog with all-over protection.
  • Not affected by water, so it does not need to be removed before swimming or baths.
  • Works to Protect your dog against fleas, ticks and mosquitos.
Play Video: Learn More About Hartz From Our Team of Experts
Learn More About Hartz From Our Team of Experts

About Hartz UltraGuard ProMax for Dogs

Why Choose a Collar?

Hartz UltraGuard ProMax Collars for Dogs are a convenient, mess-free form of flea and tick protection. Not only are they easy to put on and readjust if necessary, but they can also be worn simultaneously with your dog's other collar for up to 6 months!

How Does it Work? 

Hartz UltraGuard ProMax Collars contain active ingredients that are slowly released over your dog's entire body. The active ingredients kill and repel fleas and ticks, and can also prevent flea eggs from hatching.

Why Choose Hartz? 

Hartz has developed a flea and tick collar that provides comfort your canine can enjoy, with the protection you can trust. The soft and flexible collar allows your dog to go about his day comfortably. And you can feel confident knowing that every collar is crafted with trusted Hartz expertise in protecting your dog from those annoying pests.

How to Use the Hartz UltraGuard ProMax Dog Collar 

Step 1: Unroll the collar and stretch it to activate the ingredients inside.

Step 2: Place the collar around your dog's neck and buckle in place.

Step 3: Ensure that two fingers fit comfortably between the collar and your dog's skin. Adjust the buckle if necessary.

Step 4: Leave 2 or 3 inches of collar after the buckle for extra adjustment, then cut off and dispose of the extra length.

Protection You Can Trust

Protection from Pests 

Kills fleas and ticks, repels mosquitoes, and prevents flea eggs from hatching!

Comfort Technology 

The patented collar design features a soft and flexible texture with a smooth inside surface for maximum comfort.

6 Months of Protection 

The active ingredients release slowly over your dog's skin, providing continuous, full-body coverage for up to 6 months.

Dual Buckle System

The unique dual buckle system allows for easy application and ensures the collar won't come off.

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

Compare Similar Items

Customer Rating
Rated 4.1551 out of 5 stars
Rated 3.3 out of 5 stars
Rated 3.3673 out of 5 stars
Rated 3.0625 out of 5 stars
$31.65Chewy Price
$19.94Chewy Price
$29.94Chewy Price
$23.62Chewy Price
$30.07Chewy Price
$18.94Chewy Price
$23.65Chewy Price
$22.44Chewy Price
Top IngredientsActive Ingredients: Deltamethrin 4.00%, (S)-Methoprene 1.02%, Other Ingredients 94.98%...Deltamethrin 4.00%, Inert Ingredients 96.00%.Deltamethrin 4.00%, Pyriproxyfen 1.00%, Other Ingredients 95.00%.Peppermint, Clove, Cinnamon...
Breed SizeAll BreedsAll BreedsAll BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
LifestageAdultPuppy, Adult, SeniorPuppy, Adult, SeniorAdult
Collar TypeFlea & TickFlea & TickFlea & Tick
Health FeaturePest Control

Questions & Answers

14 Customer Questions

Does "ticks" mean all (deer) ticks? I noticed other brands say both ticks and deer ticks.
Answer by ChewyMar 30, 2022
These have been tested against Brown Dog tick, American Dog tick and Deer tick and has demonstrated efficacy.

what neck size for this tick collar ,I have a Labrador and a smaller dog
Answer by ChewyApr 08, 2022
Hartz UltraGuard ProMAX Flea & Tick Collar fits dogs with necks measuring up to 26 inches.

Do the collars emit any smell?
Answer by ChewyMar 16, 2022
The Ultra Guard Pro Max Collars does not emit a smell.

will this collar work on goldendoodles with thick hair?
Answer by ChewyApr 06, 2022
The length of the fur or thickness of the coat does not change the efficacy of the collar, as the medication is absorbed through skin cells present on the skin. This collar can be used on any length coat/fur.

ReviewsWrite a Review

Rated 4.1551 out of 5 stars
245 Reviews
Would recommend to a friend

245 Customer Reviews

Rated 5 out of 5 stars
By KatzHorseWear on Nov 17, 2022

Great flea collar

This flea collar works as well as the higher priced brand. One dog swims everyday and the collar still works! It even fits my Great Dane and works from nose to tail. My new flea collar!

Rated 3 out of 5 stars
By Ireland on Oct 3, 2022

Chemical smell

I guess the title says it all. I really hate how chemically these smell & they make my dog itchy. I guess they work tho…haven’t had an flea or tic problems…it’s just hard to snuggle my pup with the strong chemical smell ): I attached a photo just to show off Boss (: the collar is buried in his neck rolls in the pic

Rated 1 out of 5 stars
By Vinni on Aug 1, 2022

Didn't work at all :(

We have been trying for months to get rid of our dog and cats flees. It's like no matter what we do they won't go away :(. We put the fee collars on as a last resort and then we waited for three days cause that's how long it claims to take. Not only did we not find ONE dead flee but we found over 30 live ones on our cat and 10 more on our dog. We're keeping the collars on just incase they start working but guess where all the flees were on our cat??? On his neck, face, and upper back!! Even some under the collar itself!! :( the same thing happend for our dog. We bought the cat and dog collars from the same company and neither worked. This review is also on the cat collar they sell.

Rated 1 out of 5 stars
By Bird on Aug 20, 2022

Waist of money

So very dissapointed. The Collars have been on my dogs for 2 weeks now and fleas are everywhere on them. To top it off they now have ear mites. Have bought Seresto Collars in the past but was trying to save money now that I have 3 fur babies. Won't skimp again. Both my little indoor dogs and my kitten are so miserable. I hope they can forgive me.

Rated 1 out of 5 stars
By LolasMom on Oct 7, 2022

Does not work

Purchased this product for a very mild flea issue. It does not kill fleas as advertised. I have actually seen more fleas since putting the collar on than I did before.

Rated 5 out of 5 stars
By trace on Nov 20, 2022

I like the collars better than the oils

they are finding out that oils are penetrating the skin and hurting the dogs organs and causing damage.

Rated 2 out of 5 stars
By Tracy on Aug 31, 2022

Hartz Promax flea color

The colors work great for about 4 months. I have had to go to my vet and get the monthly chews for them. I think four month is still good considering there are two collars but my dogs definitely didn’t get more than 4 months out of each collar.

Rated 1 out of 5 stars
By Melody on Aug 26, 2022

hurt my dogs!

I bought these for my pug and golden retriever puppy a few months ago because the price was so great. Now I know why. Both of my dogs have now gotten open infected wounds around their necks from these collars. Buyer beware.

Rated 4 out of 5 stars
By TIMOTHY on Sep 28, 2022

Flea collar

Just don't care for the way it secures, folks with arthritis like me have a hard time "pushing" the end thru where it stays on pet...

Rated 1 out of 5 stars
By Jacquie on Jul 7, 2022

I do not have faith in this

This was delivered on June 20th (2022). I put them on two of my dogs right away. One of the dogs went to the groomer on June 30th and got shaved down to almost the skin. I pulled 5 ticks off her. I feared my Great Pyrenees may be covered in them since he has thick fur so I bought a Seresto collar at our local farm supply store. I just wish there was a less expensive highly effective collar. I have six animals that need them.