Hartz UltraGuard Pro Flea & Tick Spot Treatment for Dogs, 5-14 lbs

By Hartz
Rated 2.3333 out of 5 stars


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$14.29Chewy Price
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About This Item


  • 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 5-14 pounds.

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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.


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


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

Hartz has been delivering exceptional pet care products for over 95 years. The full range of pet care products are dedicated to the health and well-being of cats and dogs with a focus on making life with pets richer, easier, and more joyful.

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ReviewsWrite a Review

Rated 2.3333 out of 5 stars
3 Ratings
Would recommend to a friend

3 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 Mobettr on Apr 21, 2023

No bugs on my dog

This product is great been using this for years and my chihuahua mix Mimi she does not have any problem with bugs

Rated 1 out of 5 stars
By Unhappyfurmom on Apr 13, 2022

Don't buy don't buy don't buy

Don't buy 2 weeks later my smaller dog is still infested. Haven't bathed since 48 hours before application. Saw 15 to 20 fleas just by his balls and butt. Terrible product

Rated 1 out of 5 stars
By evas on Nov 9, 2021

not work at all. 100% no useful .

I use this product for my 6 small size chihuahuas, no of one that works, we see lots of fleas still moving around on the dogs after used it 24 hours, i would never recommend this product.