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

By Hartz
Rated 2.7436 out of 5 stars
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Hartz UltraGuard Dual Action Flea & Tick Spot Treatment for Dogs 61-150 lbs+, 3 Doses (3-mos. supply) slide 1 of 8
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Hartz UltraGuard Dual Action Flea & Tick Spot Treatment for Dogs 61-150 lbs+, 3 Doses (3-mos. supply) slide 1 of 8
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About This Item

  • 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 61-150 pounds and comes with 3 monthly treatments.
Play Video: Learn More About Hartz From Our Team of Experts
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.


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Top IngredientsActive Ingredients: Etofenprox 55.0%, Piperonyl Butoxide (PBO) 10.0%, n-octyl bicycloheptene dicarboximide (MGK 264) 1.0%...Active Ingredients: Etofenprox 55.0%, Piperonyl Butoxide (PBO) 10.0%, n-octyl bicycloheptene dicarboximide (MGK 264) 1.0%...Active Ingredients: Etofenprox 55.0%, Piperonyl Butoxide (PBO) 10.0%, n-octyl bicycloheptene dicarboximide (MGK 264) 1.0%...Active Ingredients: Etofenprox 55.0%, Piperonyl Butoxide (PBO) 10.0%, n-octyl bicycloheptene dicarboximide (MGK 264) 1.0%...Permethrin 45.0%, Pyriproxyfen 1.9%.
LifestagePuppy, AdultAdultAdultAdultAdult
Breed SizeLarge BreedsMedium BreedsSmall BreedsSmall BreedsMedium Breeds, Large Breeds

Questions & Answers

14 Customer Questions


Do you applie the whole thing monthly or just some.
Answer by ChewyOct 16, 2018
When applying the treatment, you should use one full applicator tube.

Does this wear off from bathing, and if used with an anti flea and tick shampoo?
Answer by ChewyNov 19, 2018
This flea treatment is waterproof after 48 hours of application.

The Ultra Guard, Flea & Tick Drops for Small dogs, says, will be effective for UP TO a month... Can it be used more often (weekly or every other week) if needed??
Answer by ChewyAug 15, 2018
Repeat this product once a month. Do not repeat dosage in less than 30 days. This can cause an overdose of the treatment which is a health hazard to your dog.

MY DOG ROLLED I. GRASS RIGHT AFTER HARTZ DUAL ACTION WAS APPLIED. WILL IT STILL BE EFFECTIVE?
Answer by ChewyJun 23, 2021
The Hartz UltraGuard will remain effective for 30 day once applied.


ReviewsWrite a Review

2.7
Rated 2.7436 out of 5 stars
39 Reviews
67%
Would recommend to a friend
1
48.7179
49%
2
5.1282
5%
3
2.5641
3%
4
10.2564
10%
5
33.3333
33%

39 Customer Reviews


Filter by reviews that mention

Rated 1 out of 5 stars
By Sianna2020 on Nov 18, 2022

Flea treatment

This product is garbage my animals still have flea's even with the flea collars


Rated 1 out of 5 stars
By unfortunately on Aug 16, 2022

didn’t kill fleas

This product didn’t kill any of the fleas unfortunately. I shoved of just saved the money and gone to the vet.


Rated 5 out of 5 stars
By dutche on Mar 15, 2022

great people

man i cant say enough about how great these people are


Rated 1 out of 5 stars
By Lady on Aug 27, 2021

Hartz for Fleas

I don’t know if it was just a bad Solution or gone out of date ! Whatever it was nothing for our pet , the fleas kept jumping on ! It didn’t kill Any Fleas ! Zero! I tried even after Bath and Dry applying Hartz product but it Failed Each time over Several Applications At this time I Wouldn’t Recommend Hartz , Very disappointing Db


Rated 5 out of 5 stars
By Tickoff on Sep 1, 2021

Tick guard

We’re experiencing a major tick invasion here in my county and we’ve had 3 deaths of humans from bubonic plague due to ticks! No joke. My dogs do not have ticks thank you chewy


Rated 1 out of 5 stars
By DoNotBuy on Sep 8, 2021

Waste of money

Didn’t get rid of the fleas not even a day. Get something more expensive because this is a waste of money


Rated 5 out of 5 stars
By MomDog on Apr 14, 2021

great product

I have a eight-year-old dog had her since she was two been using it for six years on her and now I have a dog that’s about to be 4 And I’ve been using it on him since he was six months this product is not for getting rid of fleas is for flea prevention and it works great for my dogs which is always in our yard and we have woods behind us and I have never found ticks on him or her but my kids I have found a tick or 2 also I get my yard sprayed for that stuff by professionals oh ya I only put in on them every 6 to 8 weeks not every 30 days


Rated 5 out of 5 stars
By lrubyred on Apr 18, 2021

I have always used

I have always used this on my dogs for over 30 years. only found 1 tick on one of my dogs once. and it was dead so this works


Rated 4 out of 5 stars
By Bunnie on Jan 19, 2021

Works great for the price

Seems to do a good job and is a very good price. Of course, Chewy is a great place to shop. They go above and beyond for customer service.


Rated 4 out of 5 stars
By Jessica on Sep 2, 2020

It works pretty good and the price is fantastic

I have been buying this for a while... And it works pretty good but sometimes my dog does get a couple fleas or a couple ticks... But for the most part it works. I am very weary of trying different flea and tick treatments with my dog... years ago I happened to be one of those people whose animals (yes plural -two cats) went into seizures and almost died from a flea treatment I used on them..it was devastating and it really stayed with me... Thank God they lived .but I love my dog so much that I am afraid to try anything new... I have been using this for a while and I've never had an issue... It does not bother her in any way and I would say it works about 75 to 85%... The other percentage we find and take off of her... Every night my fiance lays there and checks her.. But for the price! It works very well for the price... and I have seen negative reviews in the past on this product but I have not steered away from it because it works fine on my dog and has not caused her any harm I recommend trying it. See how it works for you! I live in a wooded area so I don't know how well any flea and tick treatment would work around here... But it works very good for the price