Hartz UltraGuard Plus Flea & Tick Spot Treatment for Cats, over 5 lbs, 3 Doses (3-mos. supply)

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About This Item

Details

  • Topical treatment that quickly and effectively kills fleas, flea eggs, deer ticks, and repels mosquitos.
  • Effective formula stops the flea life cycle and prevents re-infestation for up to 30 days.
  • Formulated for cats and kittens over 5 pounds that are 12 weeks of age or older
  • Includes three easy to use monthly applications
  • With active ingredients Etofenprox and S-Methoprene.

Ingredients

Instructions

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 Topicals for Cats

Why Choose a Flea & Tick Topical?

Hartz UltraGuard topicals provide monthly non-stop flea and tick protection. Just apply directly to your cat’s skin—it’s fast-acting and helps prevent reinfestation for up to 30 days!

How Hartz Flea & Tick Topicals Work

Hartz UltraGuard topical formulations utilize your cat’s natural oil composition to spread their active ingredients across the skin. When applied, the monthly formula moves across the skin and hair naturally for full body protection.

How to Apply Hartz Flea & Tick Topicals

Step 1: Open the package and remove one tube.

Step 2: Break the seal by twisting the dispenser tip while pushing down.

Step 3: Position the dispensing tip on the cat’s back between the shoulder blades.

Step 4: Apply the topical directly to the skin, from the shoulder blades to the base of the tail.

Monthly Flea & Tick Protection

Pest Protection

Hartz UltraGuard cat topicals kill and prevent fleas and ticks for up to 30 days, offering full-body protection.

Fast-Acting

Once applied, UltraGuard topicals start killing fleas in as little as 15 minutes.

Waterproof

UltraGuard offers full waterproof protection for 48 hours after application, so it keeps working even if your cat gets wet.

Pro-Glide Applicator

Hartz UltraGuard PRO Topical has a specially angled applicator for easy, mess-free application.

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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Questions & Answers

6 Customer Questions

Does this product have an expiration date?

Answer by Chewy • May 11, 2018
This flea and tick treatment has a shelf life of 5 years after the manufacturing date.

How long do you keep your cats away from eachother?

Answer by Chewy • Oct 01, 2019
Households with more than one cat should prevent cats from grooming each other until solution has dried.

Is it safe to use the Hartz Flea product along with a flea collar?

Answer by Chewy • Aug 27, 2019
Full-strength preventatives are intended to be used alone. We encourage speaking with your vet before combining pest preventatives, for the safest opinion.

What is the best way to use ultra guard flea and ticks treatment

Answer by Chewy • Aug 26, 2019
For complete instructions on how to apply this treatment you can click on the "Instructions" tab, next to the “Description” and “Instructions” tab, just under the product photos.
Reviews
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3.2
Rated 3.2 out of 5 stars
112 Ratings
Terms & Conditions

71 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 TAMMY on Sep 11, 2025

Doesn't work

I have 35 cats and this did not work on any of them. A few of them lost hair while others drooled. Still have fleas. Very disappointed. I guess the saying you get

I have 35 cats and this did not work on any of them. A few of them lost hair while others drooled. Still have fleas. Very disappointed. I guess the saying you get what you pay for. I researched the ingredients but it just didn't work.

Rated 5 out of 5 stars
By Bruce on May 23, 2025

Name brand at reasonable expense.

If it does the job as other topical type flea and tick preventer (which I think are grossly overpriced), then I'm all for it. So far, just one application given

If it does the job as other topical type flea and tick preventer (which I think are grossly overpriced), then I'm all for it. So far, just one application given. Other than our cat hates vet visits and receiving preventative treatments, he is an indoor pet - adopted from a rescue facility over 8 years ago. Really don't know his prior history, but it likely was not kind and that had a bearing on his personality. He is scared of strangers and even to the two of us in the house, does not care to be picked up. An independent animal that only shows some affection at night when the adults have gone to bed.

Rated 1 out of 5 stars
By Jules on Jun 17, 2025

Side effects not worth it

My cat is having all of the negative reactions skin irritation, palpitations, and general misery. Monitoring to see if I have to take him to the vet after washing

My cat is having all of the negative reactions skin irritation, palpitations, and general misery. Monitoring to see if I have to take him to the vet after washing the product off.

Rated 5 out of 5 stars
By Katherine on Jun 12, 2025

Great Price

Fast delivery, exactly what I was looking for at a affordable price. Easy to apply.

Fast delivery, exactly what I was looking for at a affordable price. Easy to apply.

Rated 5 out of 5 stars
By Alice on Jul 24, 2025

Price

It work great, I haven't had any problems.

It work great, I haven't had any problems.

Rated 5 out of 5 stars
By Lesley on Oct 17, 2025

good price

good product

good product

Rated 5 out of 5 stars
By Darlene on Apr 17, 2025

Very easy to use.

I have a very fussy cat . This is easy to use.

I have a very fussy cat . This is easy to use.

Rated 5 out of 5 stars
By Stacey on Apr 16, 2025

The price and three prompt delivery.

Easy to apply.

Easy to apply.

Rated 5 out of 5 stars
By Clara on Mar 31, 2025

Cats need it.

Like the color.

Like the color.

Rated 5 out of 5 stars
By James on Nov 1, 2024

The product works.

This keeps the flees and ticks filled.

This keeps the flees and ticks filled.