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

By Hartz
Rated 3.6545 out of 5 stars


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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.

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Play Video: Learn More About Hartz From Our Team of Experts
Learn More About Hartz From Our Team of Experts

About Hartz UltraGuard ProMax Collars for Dogs

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 6 months, and they can be worn alongside your dog’s regular collar.

How Hartz ProMax Collars Work

Hartz ProMax Flea & Tick dog collars contain active ingredients that are slowly released and spread over your dog’s body. These active ingredients kill and repel fleas and ticks and also prevent flea eggs from hatching.

Comfort and Protection from Fleas & Ticks

Don’t Settle for Stiff

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

Comfort and Protection

ProMax provides up to 6 months of continuous, full-body protection—and your dog will barely notice it’s on!

One Size Fits All

The adjustable design accommodates dogs of all sizes, while the dual buckle provides a secure, yet comfortable, fit.

Why Choose Hartz?

ProMax collars are made with trusted Hartz expertise to comfortably protect your dog from ticks, fleas and mosquitos.

About Hartz

Hartz has been delivering exceptional pet care products for over 95 years. Their full range of pet care products is dedicated to the health and well-being of cats and dogs. Hartz is dedicated to making quality products that help make 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.Deltamethrin, Pyriproxyfen.Deltamethrin 4.00%, Inert Ingredients 96.00%.Deltamethrin
Breed SizeAll BreedsSmall Breeds, Medium Breeds, Large BreedsSmall Breeds, Medium Breeds, Large BreedsAll BreedsSmall Breeds, Medium Breeds, Large Breeds
LifestageAdultAdultAdultPuppy, Adult, SeniorAdult
Collar TypeFlea & TickFlea & TickFlea & TickFlea & TickFlea & Tick
Health FeaturePest Control

Questions & Answers

15 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.

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

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.

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 3.6545 out of 5 stars
356 Ratings
Would recommend to a friend

353 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By texan4305 on Sep 6, 2023

wonderful product

One of the most important aspects of any flea and tick collar is its ability to actually work, and in this regard, the ProMax collar doesn't disappoint. Within a few days of putting it on my dog, I noticed a significant reduction in fleas and ticks. After a couple of weeks, they were virtually non-existent. It's worth noting that the collar seemed to work better on ticks than fleas, but overall, it did an admirable job in keeping these pests at bay. One of the standout features of the ProMax collar is its ease of use. Simply buckle it around your dog's neck, and you're good to go. No messy monthly treatments or pills to remember, which is a huge relief for both me and my dog. The collar is also adjustable, ensuring a comfortable fit for dogs of all sizes. It's waterproof too, so you don't need to worry about taking it off during bath time or outdoor adventures. Safety is paramount when it comes to any product used on our pets, and I appreciate that the ProMax collar is designed with this in mind. It's made with non-toxic materials, and I didn't observe any adverse reactions or irritation on my dog's skin. Its easy application and long-lasting protection make it a top choice for busy pet owners.

Rated 4 out of 5 stars
By NolaF on Sep 1, 2023

Works well & lasts a long time

I received this product for free in exchange for my honest review. I have Chihuahuas and they like to run along the edge of the woods where they are prone to pick up ticks. I put this on my girl, Chloe, easily and just cut the rest off. Simply separate it after you remove it from the plastic pack inside the tin it comes in, slide the end through the closure and gently tug until it’s the desired length, and cut the excess off. It stays in place really well. It does have a bit of a vinyl like smell to it that seems to fade after a few days. It works for us, as I haven’t seen any fleas or ticks on my girl.

Rated 5 out of 5 stars
By MRains on Sep 5, 2023

Super easy

I recently received an offer from Hartz to try their new Flea & Tick collars. First, the collars were super easy to place on the dogs and i like that their customizable. I also like the fact that if for some reason the collar got hung on something, the collar would break away rather than choking my dogs. These collars do not have any type of odor so that is a plus as well. I cant wait to see how the dogs are doing in a few months with these new collars. It feels much safer using these rather than a topical chemical for fleas & ticks. So far, I'm very happy with these collars.

Rated 4 out of 5 stars
By BlackDogMom3 on Aug 25, 2023

Affordable and effective

affordable, effective, and convenient tool against this year's flea population explosion. we don't usually see any ticks in this area, so I can't speak as to that. I am a little skeptical as to whether this will truly work for 6 months, but we will see. One of my dogs did have a little irritation at first in the collar area, but considering the alternatives of oral flea medications or topicals, it was not enough to be of concern. My dog that has longer fur in the collar area did not have any issue. Fleas have been really bad in our area this year, and I think that just switching to this different product has helped us for now, as our old product wasn't working that great anymore.

Rated 5 out of 5 stars
By TanyaW on Aug 25, 2023

Works for my dog!

We gave my dog flea and ticks pills for years but became concerned over her health since she got older. I was curious to try the Ultra Guard ProMax Flea & Tick Collar for Dogs by Hartz. This collar provides 6 months of protection; kills fleas and ticks and repels mosquitoes. My dog was using it for a couple of weeks, and we haven’t had flea or tick problems. I’m very happy with this collar and would recommend it to other dog owners!

Rated 5 out of 5 stars
By Jbeard25j on Aug 19, 2023

Very effective

This Ultra Guard ProMax Flea & Tick Collar for Dogs is very effective and helps keep my dog protected from fleas and ticks all year long. It comes with 2 collars that last for 6 months each. The tin the collars come in is perfect for keeping them fresh so they last until you are ready to use one. These collars are flexible and easy to put on my dog plus they have an amazing secure dual buckle system to keep them in place. This is a wonderful product I would recommend

Rated 5 out of 5 stars
By Miko on Aug 18, 2023


I recieved this item free for my honest review. Honestly, I was skeptical because of the strong smell coming from the collar when I first opened it but im assuming it was because the carrier left it directly in the sun because I no longer smell that odor. The collar works greats my dog doesn't have any issue with the collar. She is tolerating it amazingly. It is definitely protecting her from the fleas and ticks. She loves being outside in the grass running and playing and I have yet to see one flea or tick since using this collar. I would definitely recommend!

Rated 3 out of 5 stars
By pokeywinkel123 on Aug 30, 2023

The collars are okay

I used these collars on my 2 dogs. One dog has longer hair and the other dog has short hair. My dogs liked the comfort of the collars. I think they were just okay because my dogs kept biting fleas while wearing these collars. I was pretty disappointed in these collars. I was really hoping that these collars did last 6 months like they are supposed to so I could save a lot of money. Unfortunately that wasn't the case.

Rated 4 out of 5 stars
By Grammy on Aug 26, 2023

Collar does it’s job!

My dog has been using this Hartz Flea/Tick collar now for 11 days & it is definitely doing it’s job. Living in a rural area, I’m always concerned about fleas & ticks, but so far, I haven’t found any on my dog. I just don’t like the strong smell emitted from the collar. My dog didn’t like it either. It took almost a week for the scent to dissipate. Otherwise, I am very satisfied with this Hartz product.

Rated 5 out of 5 stars
By SHERRY on Aug 21, 2023

Fleas and ticks at Bay

Outside of having regular baths and keeping fresh a well-known company hartz has made a Flea and tick collar That comes in several colors And is also the help to keeping fleas and ticks at Bay especially since we've been having this heat wave more ticks and fleas are are active the collar Has been helping unlike cats that can be indoors or out Dogs are both types and are prone to getting both fleas and ticks so protection is welcomed