Hartz UltraGuard Pro Flea & Tick Spot Treatment for Dogs 61-150 lbs, 3 Doses (3-mos. supply)

$10.39 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 

$15.19 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$15.99 Chewy Price
($5.33 /ea)

In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

About This Item

Details

  • Long-lasting, monthly topical flea treatment helps prevent reinfestations for 1 month.
  • Formulated with dual Insect Growth Regulators (IGRs) that protect your pet and his environment from reinfestation and starts killing fleas within 15 minutes.
  • Kills fleas, flea larvae and flea eggs, brown dog ticks and deer ticks and repels mosquitoes.
  • The patented, easy-to-use Pro-Glide angled applicator has rounded edges providing your canine companion with a more comfortable application experience.
  • Quick-drying formula suitable for long- and short-haired dogs who weigh 61-150 pounds.

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.

Shop Hartz

Questions & Answers

Be the first to ask a question.

3.3
Rated 3.3 out of 5 stars
22 Ratings

12 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 David on Aug 7, 2025

Flea meds

Love that it keeps more then just flea's and ticks off my dog

Love that it keeps more then just flea's and ticks off my dog


Rated 5 out of 5 stars
By Kay on Jun 20, 2024

Hartz UltraGuard

Works as good as that high dollar stuff and very good price

Works as good as that high dollar stuff and very good price


Rated 1 out of 5 stars
By Kate on Mar 1, 2020

Watch out flea and tick treatment

Gotton this for my dog I used all 3 for the first 3 months starting in jan she still has fleas and eggs and really itching I guss I learned a very important lessons

Gotton this for my dog I used all 3 for the first 3 months starting in jan she still has fleas and eggs and really itching I guss I learned a very important lessons cheaper ant allways better if I was you go with vectra 3D i have used this in the past from the vets but was to costly but know i dont care how much it cost what matters is my babygirl and getting ride of these dam fleas again I dont give a hoot if vectra 3D it 50 or 200 it works


Rated 1 out of 5 stars
By mitch on Jan 30, 2020

made hair fall out

This is junk! I put this on my puppy and all of his hair starting falling out. I took him to the vet and the vet told me to never use this product again.

This is junk! I put this on my puppy and all of his hair starting falling out. I took him to the vet and the vet told me to never use this product again.


Rated 4 out of 5 stars
By emoly on Sep 27, 2019

I love the applicator!

I love the applicator, it’s super easy to use. My dog hasn’t gotten fleas or ticks so I guess it works! I just really wish it smelled better. After I put this in

I love the applicator, it’s super easy to use. My dog hasn’t gotten fleas or ticks so I guess it works! I just really wish it smelled better. After I put this in my dog she smells kinda like old cardboard.


Rated 1 out of 5 stars
By KarenB on Sep 22, 2019

Doesn't work

I bought a 3 pack for my 3 miniature pinschers. This product did not work for them.

I bought a 3 pack for my 3 miniature pinschers. This product did not work for them.


Rated 5 out of 5 stars
By ValH on Aug 14, 2019

Effective product for an outstanding price!

This flea medication seemed to resolve the issue and at a great value, highly recommend!

This flea medication seemed to resolve the issue and at a great value, highly recommend!


Rated 2 out of 5 stars
By Dogluvr on Jul 15, 2019

Fleas ticks mosquitos

Why bother this item doesn’t work if anything made the flea problem worse. Already treated home and yard they just migrate more to my puppy :(

Why bother this item doesn’t work if anything made the flea problem worse. Already treated home and yard they just migrate more to my puppy :(


Rated 1 out of 5 stars
By Bonnie on Aug 18, 2017

Did not work

I thought this was a great mistake spending money I really don't have, for something that does not work. The very next day still had feas jumping on my two dogs

I thought this was a great mistake spending money I really don't have, for something that does not work. The very next day still had feas jumping on my two dogs outside and bringing them indoors. It's hard to get rid of feas!


Rated 4 out of 5 stars
By Deanie on Aug 14, 2017

Would buy again

Worked pretty good on my 3 dogs. Would probably purchase again

Worked pretty good on my 3 dogs. Would probably purchase again