Hartz UltraGuard Dual Action Flea & Tick Spot Treatment for Dogs, 31-60 lbs, 3 Doses (3-mos. supply)

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About This Item

Details

  • This topical formula is designed to protect your canine companion against fleas and ticks including brown dog ticks and deer ticks.
  • One application of UltraGuard Dual Action formula keeps your pal protected from pesky pests for up to 30 days.
  • Tick and flea solution may also prevent re-infestation for the convenience of both pets and pet parents alike.
  • UltraGuard Dual Action treatment breaks the flea life cycle so that your dog can continue to do what he loves.
  • This topical solution is suitable for dogs between 31-60 pounds and comes with 3 monthly treatments.

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 Dogs

Why Choose a Flea & Tick Topical?

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

How Hartz Flea & Tick Topicals Work

Hartz UltraGuard topical formulations utilize your dog’s natural oil composition to spread their active ingredients across the skin. Once applied, the monthly formula moves across the skin and hair 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 your dog’s back between the shoulder blades.

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

Monthly Flea & Tick Protection

Pest Protection

Hartz UltraGuard dog topicals help 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 dog 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

4 Customer Questions

Why do you need to separate the dog after treatment? What if your treating multiple dogs?

Answer by Chewy • Oct 31, 2022
Separate treated dogs from other pets for 24 hours after treatment has been applied. There should be no contact with the treated area until completely dry.

Will swimming remove the treatment?

Answer by Chewy • Jun 24, 2021
After applying this treatment, do not allow your dog to swim or bathe for 48 hours your pet can swim.

How long must one wait to bathe dog after treatment

Answer by Chewy • Jan 13, 2021
After applying this treatment, do not allow your dog to swim or bathe for 48 hours.

Does this repel rat mites?

Answer by Chewy • Jan 04, 2021
This fast-acting formula helps to kill fleas along with brown dog ticks, deer ticks, plus it helps to prevent re-infestations.
Reviews
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4.1
Rated 4.1 out of 5 stars
151 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

66% Positive

Effectiveness

63% Positive

Ingredients

64% Positive

Long-Term Benefits

68% Positive

43 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 Teresa on Dec 17, 2025

Did Not Work

After 2 months of treatment it was obvious that the product did not work.

After 2 months of treatment it was obvious that the product did not work.

Rated 5 out of 5 stars
By Fran on Oct 18, 2025

The speed in receiving all the things for the furry kids Kona and Ryia

Thank you thank you for your kindness compassion and speed for getting the delivery here.

Thank you thank you for your kindness compassion and speed for getting the delivery here.

Rated 1 out of 5 stars
By Jessica on Sep 15, 2025

Doesn’t work

Cheap product offers cheap results. Don’t even waste your time or money on this product

Cheap product offers cheap results. Don’t even waste your time or money on this product

Rated 1 out of 5 stars
By Keith on Apr 16, 2025

Hartz Ultra Guard Dual Action. It does not work at all.

I used this product for 3 months on my Dog. For three months she has been covered in fleas. I had to buy a Flea collar and a flea spray to use on her until I got

I used this product for 3 months on my Dog. For three months she has been covered in fleas. I had to buy a Flea collar and a flea spray to use on her until I got her to the Vet. Vet said this product has had many complaints from her clients. I want my money back, plus the Vet bill paid for. I will not stop, no matter the cost, until I get my money back!!

Rated 4 out of 5 stars
By Juan on Jul 17, 2025

Less itch

He seems to have less itches and is happy to have the crawlers off.

He seems to have less itches and is happy to have the crawlers off.

Rated 1 out of 5 stars
By Alicia on Aug 8, 2025

Did not work

I used this on my dog for 2 months and he still got fleas

I used this on my dog for 2 months and he still got fleas

Rated 4 out of 5 stars
By Mary on Aug 9, 2025

Nice

Kinda oily. Works o.k. for this area.

Kinda oily. Works o.k. for this area.

Rated 4 out of 5 stars
By Kat on Oct 15, 2025

Flees

It worked somewhat ok

It worked somewhat ok

Rated 1 out of 5 stars
By mars on Jul 14, 2025

simply did nothing

this brand did nothing for my cats or dogs

this brand did nothing for my cats or dogs

Rated 5 out of 5 stars
By Carol. on Jul 18, 2025

FLEA PROTECTION

KEEPING THE FLEAS OFF MY FUR BABIES

KEEPING THE FLEAS OFF MY FUR BABIES