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

By Hartz
Rated 4.1667 out of 5 stars
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Hartz Ultra Guard ProMax Flea & Tick Collar for Dogs, Blue, 2 doses (12-mos. supply) slide 1 of 11
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Hartz Ultra Guard ProMax Flea & Tick Collar for Dogs, Blue, 2 doses (12-mos. supply) slide 1 of 11
Color: Blue

$32.97Chewy Price
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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

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Top IngredientsActive Ingredients: Deltamethrin 4.00%, (S)-Methoprene 1.02%, Other Ingredients 94.98%...Deltamethrin.Active Ingredients: Flumethrin 4.5%, Imidacloprid 10.0%.Deltamethrin 4.00%, Inert Ingredients 96.00%.Deltamethrin, Pyriproxyfen.
Breed SizeAll BreedsLarge Breeds, Medium Breeds, Small BreedsMedium Breeds, Large Breeds, Giant BreedsAll BreedsLarge Breeds, Medium Breeds, Small Breeds
LifestageAdultAdultPuppy, Adult, SeniorPuppy, Adult, SeniorAdult
Collar TypeFlea & TickFlea & TickFlea & TickFlea & TickFlea & Tick
Health FeaturePest Control

Questions & Answers

15 Customer Questions

Why does this collar have a strong smell to it?

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.

ReviewsWrite a Review

Rated 4.1667 out of 5 stars
240 Reviews
Would recommend to a friend

240 Customer Reviews

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 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 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.

Rated 1 out of 5 stars
By Sylvia on Jun 28, 2022

Not Working

I am so disappointed. I usually buy seresto collars, but decided to try this brand, because of the price. I gave my chihuahua a bath and put the collar on after he was dry. My fur baby has fleas. I can actually see them crawling on him. I guess I am going to have to give in and buy the seresto collar again. It's so expensive that's why I switched to this one and plus I saw good reviews.

Rated 1 out of 5 stars
By koog on Jul 28, 2022

fleas alive

i bought a few hartz ultra guard collars they do not work my animals are miserable in fleas worst than they ever were .these collars i think attrack fleas because now they are covered in them please be aware these do not work

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

Got fleas immediately

My parents dog hasn't had fleas since she was a puppy. I decided to try this brand after using a different collar for a long time, and she got fleas immediately.

Rated 1 out of 5 stars
By Snowball on Jul 27, 2022

Very disappointed

I got this for my little 6 pound dog and it's been about 6 days and he still has alot of fleas it hasn't worked at all I don't think the fleas are still moving fast don't even seem like they are dying.

Rated 5 out of 5 stars
By Sincerity on Jun 24, 2022

Good as the Spendy ones

I have used a substantially more expensive version for several years. Decided to try these out and very much to my surprise (I swore off this particular brand years ago) they have worked fantastic! Our problem is mostly ticks here and I have not had to remove even one since putting these on all seven dogs.