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

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About This Item

Details

  • Long-lasting, monthly topical flea treatment that prevents re-infestations for 1 month
  • With dual Insect Growth Regulators (IGRs) that protect your pet and their environment from reinfestation, and starts killing fleas within 15 minutes
  • This effective formula kills fleas, brown dog and deer ticks, flea eggs and flea larvae, and repels mosquitoes
  • Features the patented and easy-to-use Pro-cision Flo angled applicator with rounded edges for a softer, more pleasant application experience, suitable for long and short-haired dogs
  • Quick-drying formula

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

1 Customer Questions

This product says it kills deer and dog ticks. Does it also work on Lone Star and any other ticks in the area?

Answer by Chewy • Jul 19, 2019
This treatment can be used to kill and repel only deer ticks.
Reviews
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3.1
Rated 3.1 out of 5 stars
164 Ratings
Terms & Conditions

113 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 Christine on Dec 25, 2025

Dr Bentley

Dr Bentley always goes above and beyond. He even came out to the house when I didn't know what was hurting my cats

Dr Bentley always goes above and beyond. He even came out to the house when I didn't know what was hurting my cats

Rated 5 out of 5 stars
By Sandra on Aug 27, 2025

It works

Ultraguard Plus has kept my cat flea and tick free for over 6 years . I love that it's a topical and easy to apply once a month . The price is very reasonable.

Ultraguard Plus has kept my cat flea and tick free for over 6 years . I love that it's a topical and easy to apply once a month . The price is very reasonable.

Rated 5 out of 5 stars
By KrazyKatLady on Jun 9, 2025

It works great for fleas and ticks

I bought this for a stray tom cat that showed up at my door. He had these tiny ticks all over his face and was infested with fleas. I didn't want to spend a lot

I bought this for a stray tom cat that showed up at my door. He had these tiny ticks all over his face and was infested with fleas. I didn't want to spend a lot of money and purchased this. After 1 day, all of those little ticks had fell off of his face and he was flea free! I was surprised how well this worked.

Rated 1 out of 5 stars
By RW on Aug 18, 2025

Nothing. It worked for about 3 days then nada.

It was a complete waste of time. I also did not like how the product smelled at all.

It was a complete waste of time. I also did not like how the product smelled at all.

Rated 1 out of 5 stars
By T on Apr 8, 2025

DO NOT BUY THIS PRODUCT

I used this on two of my cats and their reaction to it was terrifying. My male baby started meowing and chittering real scary... his skin on the back of his neck

I used this on two of my cats and their reaction to it was terrifying. My male baby started meowing and chittering real scary... his skin on the back of his neck turned RED! I removed the product IMMEDIATELY not even 5 min after usage. My female baby didn't react but I was so scared that I took it off her too. Do not use... I didn't know the side effects were what they were. So scary

Rated 4 out of 5 stars
By Scott on Nov 22, 2025

The box

That it work as it should

That it work as it should

Rated 4 out of 5 stars
By Louise on Feb 26, 2025

it works

it is the only one that I know works. But my cats hate it because it burns thier skln

it is the only one that I know works. But my cats hate it because it burns thier skln

Rated 5 out of 5 stars
By Sandra on May 3, 2025

Humane Society

I donated this item to the Humane Society

I donated this item to the Humane Society

Rated 5 out of 5 stars
By Kristina on May 5, 2025

Hartz UltraGuard Pro Flea & Tick Spot Treatment for Cats

works well and good price

works well and good price

Rated 1 out of 5 stars
By Stori on Sep 8, 2024

horrible skin frying

This product caused giant sores on the back of both of my cats necks. It literally like fried their skin. Not to mention it didn’t stay contained on their application

This product caused giant sores on the back of both of my cats necks. It literally like fried their skin. Not to mention it didn’t stay contained on their application spot and made it easy for them to lick and caused them to freak out for hours.