Pet Keen is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Home > Cats > Hartz Ultraguard Flea Collar for Cats Review 2024: Pros & Cons

Hartz Ultraguard Flea Collar for Cats Review 2024: Pros & Cons

Hartz Ultraguard Flea Collar for Cats - Featured Image

Review Summary

Our Final Verdict

We give Hartz Ultraguard Flea Collar a rating of 4.7 out of 5 stars. 

Price: 5/5
Effectiveness: 4.5/5
Longevity: 4.5/5

If you have ever been in the market for pet care products, you have probably run across Hartz before. Hartz has been involved in the pet care business for nearly a century. They have several product lines for cats and dogs, providing fundamental essentials such as toys, grooming care, and treats. Among their products are health and wellness options, such as flea prevention.

The Ultraguard Flea Collar for cats is one of the quality health and wellness options Hartz offers. This product is a lifesaver for cat owners who want to protect their feline friends from pesky pests. It provides effective flea and tick repellants at an affordable price, helping you to manage your cat’s bug problem without breaking the bank.

If you are considering a flea collar for your cat, look at what Hartz Ultraguard offers.



Hartz Ultraguard Flea Collar for Cats – A Quick Look

Hartz Ultraguard Flea Collar for Cats

  • Long-lasting quality
  • Affordable
  • Reflective coating
  • Waterproof
  • Less durable material



Brand Name: Hartz
Purpose: Prevention and treatment
Life Stage: Kitten and adult
Product Type: Collar
Active Ingredient: Tetrachlorvinphos
Weight: 11.7 grams
Size: Adjustable for all sizes
Scent: Clean and fresh
Amount Per Package: 1
Longevity: 7 months

Long-Lasting Quality

Hartz Ultraguard Flea & Tick Collar has enduring effects. While some flea prevention products are short-lived, Hartz ensures that your cat is covered for over half a year.

The Ultraguard Flea & Tick Collar lasts 7 months, providing total prevention and treatment.  That’s right: not only does this flea collar prevent infestation, but it also helps combat any fleas that have already made themselves homes in your cat’s fur.

The long-lasting quality of the Ultraguard Flea & Tick Collar is a massive bonus for any pet owner who does not want to constantly remove and replace a collar from their cat’s neck.

Hartz Ultraguard Flea Collar for Cats worn by a cat outside


For a product with such long-lasting effects, you might think that it is expensive. But the truth is, the Hartz Ultraguard Flea & Tick Collar is easily affordable. Compared to the competition, this flea collar is the cheapest you can find.

If you are looking for great value, the Hartz Ultraguard Flea & Tick Collar is the way to go.

There Is a Reflective Option

If you are concerned about your outdoor cat’s well-being for reasons other than fleas, this collar has you covered.

You can purchase a reflective version to ensure your cat can be seen in the dark. The reflective strip will help you to find your cat wandering around in the dark or help drivers to spot your cat at night. If your cat is wandering out late, you can rest easy knowing that the reflective collar can help keep your furry friend safe.

However, not all Hartz Ultraguard Flea & Tick Collars come with this option.



If your cat gets caught in the rain or needs a bath, you will not have to worry about taking off the collar. The Hartz Ultraguard Flea & Tick Collar is designed to withstand moisture.

Less Durable

A downside to the Hartz Ultraguard Flea & Tick Collar is that it is not very durable. The collar can break if your cat tends to get into tussles or other rambunctious activities. You should pay attention to the collar to watch for any warning signs that it may snap so you can buy a replacement.



If you want to learn more about the Hartz Ultraguard Flea & Tick Collar, we have gathered some of the most commonly asked questions about the product.

Does This Collar Kill Fleas Currently on My Cat?

This collar works as both preventative care and treatment. If your cat is already infected with fleas, this collar will repel fleas and kill the ones already there.

Will My Cat Be Able to Groom Himself With this Collar?

The Hartz Ultraguard Flea & Tick Collar is crafted with safety in mind. Since cats lick themselves for grooming purposes, the collar is designed to allow cats to do so without issue. When used correctly, no problems should arise.

However, if your cat licks the collar directly, it could experience a few side effects. This includes gastrointestinal discomfort, an increase in salivation, and an increase in drooling.

Can I Bathe my Cat with a Flea and Tick Shampoo While He Is Wearing this Collar?

You should not use flea and tick shampoos while your cat is wearing the Hartz Ultraguard Flea & Tick Collar. You must wait at least 30 days after removing the collar before washing your cat with flea and tick shampoo.

Girl washes cat in the bath
Image Credit: Olleg, Shutterstock


What the Users Say

We searched through customer reviews to get a fuller picture of the Hartz Ultraguard Flea & Tick Collar.

  • Most customers commend the Hartz Ultraguard Flea & Tick Collar for completely eradicating their cat’s flea and tick problems
  • Pet owners note that their cats do not seem distressed by the presence of the collar
  • A few users complain that the Hartz Ultraguard Flea & Tick Collar is not as effective as they had hoped, but these reviews seem few and far between
  • Many pet parents say that the smell of the collar is not overpowering or unpleasant
  • Plenty of customers report that the product performs exactly as advertised
  • Some note that the collar is less durable than they would like
  • A couple of users say that the collar helped prevent the transmission of fleas from one cat to another



Fleas are pesky little creatures that are difficult to deal with, especially when they are tormenting our beloved cats. The Hartz Ultraguard Flea & Tick Collar can help prevent and eliminate a flea infestation on your cat. With long-lasting effects at an affordable price, it is easier than ever to help your cat to be healthier and happier.

Our vets

Want to talk to a vet online?

Whether you have concerns about your dog, cat, or other pet, trained vets have the answers!

Our vets