Skip to content
Hartz

Hartz

www.hartz.com
What is your customer experience with Hartz?

Hartz Overview

The generated data is based on reviews and questionnaires provided by PissedConsumer.com users.

Based on reviews, created with AI
Rating Distribution

Hartz has a 1.6 star rating from 36 reviews; consumers are mostly dissatisfied with 89% unfavorable reviews. Recurring calls for refund and reports of defective products, severe pet reactions, and poor exchange/refund policy dominate Hartz reviews and customer complaints.

Key Takeaways for Future Customers

  • Expect safety concerns reported with flea/tick products; monitor pets closely.
  • Many customers request a refund; contact customer service about refunds and exchanges.
  • Watch packaging and product quality for leaks or missing items.

Negative Feedback / Risk Areas

  • Repeated reports of severe adverse reactions, chemical burns, seizures, and pet deaths.
  • Poor response on refunds, exchanges, cancellation policy, and customer service.
  • Defective items, missing pieces, and inconsistent product quality.

Positive Feedback

Some reviewers note low price and pets liking certain treats, though quality concerns are also reported.

View full overview ›

Media from reviews

Hartz - Bad reaction to flea/tick collar
Hartz - AccidentHartz - Accident - Image 2Hartz - Accident - Image 3Hartz - Accident - Image 4Hartz - Accident - Image 5Hartz - Accident - Image 6
View all media ›

Turn one complaint into a collective action

PC collective complaint

A Collective Complaint helps you unite consumers dealing with the same issue, such as wrong charges, unexpected fees, damaged items, or misleading promises. It goes beyond a single review by growing stronger with every signature, making it harder to ignore. Once you reach 20 supporters, we’ll send it to the company to encourage a response.

Start Collective Complaint
Show reviews that mention
cat flea money reaction cats vet dogs collar flea medicine dog
Filter review
Sort by
Kayla M Qew

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer
| map-marker Saint Louis, Missouri

Delectables

AI Highlights
  • - The box had fatty oils in every tube and looked liquidy, not like treats.
  • - I discarded them, fearful for my cat and I’d appreciate help.

The hole box was filled with fatty like oils in every tube an not actually looking like the treats look like normally all liquidy. I threw them away was too scared to feed them to my cat. Is there something you guys could do id appreciate it an so would my kitty.

Thank you

Preferred solution: Coupons

User's recommendation: There very good an my cat loves them unless there like what I got

View full review
Featured
Janene H Xyn

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer
| map-marker West Palm Beach, Florida

Bad reaction to flea/tick collar

AI Highlights
  • - Hartz flea collar was put on the dog and two weeks later he had bumps and hair loss.
  • - The collar was discarded and the dog was bathed; bumps remain.
Hartz - Bad reaction to flea/tick collar

Put the Hartz flea collar on the dog. Two weeks later, he had bumpy lesions and missing fur patches!

Threw the collar away. Bathed the dog.

Still, after two weeks without it, he has lesion bumps! Very upset!

Loss:
$37
Cons:
  • Causes lesions
  • Makes fur fall out

Preferred solution: Full refund

User's recommendation: Do NOT put these collars on your animals

View full review
1 comment
Guest

We are very sorry to hear about the problem your pet experienced. The safety and well-being of you and your pet are extremely important to us, and every product is marketed with this in mind.

We would like to investigate this matter further and report your concern. To do so, we need some additional information. Your correspondence has been kept on file, and we ask that you please call us at (800) 275-**** with your case number (found in the subject line of this email), the product, and its packaging. Our Health and Safety Line is available 24/7.

If you call after business hours (9:00 a.m.

- 5:00 p.m. EST), you can still speak with a representative.

Anonymous
map-marker Washington, District Of Columbia

Accident

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full

I was in on the light. When the blue light comes up I start driving and that time from opposite side other car coming and heat the car. Because other drivers vibrate the red light.

User's recommendation: How long it will take finish the process. And police need the insurance for the car. So I just want to know it’s should be goose by uber right. Please let me know.

View full review
Glendale Uce

Oinkies made the dog very sick‼

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
Hartz - Oinkies made the dog very sick‼

Serial number SZ3304 1

Refund Required

9420 Fleetwood Dr

Reno, NV 89506

Maybe we should give you the vet bill

User's recommendation: Not to buy things from China

View full review
Melanie B Sri

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Your product almost killed my dogs

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - Two dogs had severe reactions after flea products.
  • - The vet said a severe reaction; both dogs were unable to walk until the next day.

I used your flea shampoo and flea collars on my two little dogs, Zoey and Samantha, 'dog-dog.' Less than four hours later, dog-dog went into a seizure, and Zoey was throwing up everywhere; neither one of them was able to walk until the next day. I thought they were going to die.

The vet said there was a severe reaction to your product. I put both of them back in the tub, got them free of your product, and held them both all night long, praying that nothing else was going to happen to them. I don't know how you can sell something that can do horrible, painful things to animals. It is just awful.

I'm beyond disappointed with your product; I'm screwed on the money I threw away to get it and still have fleas.

I'm too scared to give them anything else. It's just ridiculous how you are really treating your fellow Americans, your neighbors.

Loss:
$36
Pros:
  • Cheap
Cons:
  • Almost killed my dogs

Preferred solution: Full refund

View full review
Melanie B Sri

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Your product almost killed my dogs

AI Highlights
  • - Flea shampoo and collars on two dogs caused a seizure and vomiting.
  • - Vet said it was a severe reaction and they cared for the dogs overnight.

I used your flea shampoo and flea collars on my 2 lil dogs, Zoey and Samantha, 'dog-dog.' Less than 4 hours later, dog-dog went into a seizure and Zoey was throwing up everywhere; neither one of them was able to walk until the next day. I thought they were going to die.

The vet said it was a severe reaction to your product. I put both of them back in the tub, got them free of your product, and held them both all night long, praying that nothing else was going to happen to them. I don't know how you can sell something that can do horrible, painful things to animals. It is just awful.

I'm beyond disappointment with your product; I’m screwed on the money I threw away to get it and still have fleas.

I'm too scared to give them anything else. It's just ridiculous how you are really treating your fellow Americans, your neighbors.

Loss:
$36
Cons:
  • Almost killed my dogs

Preferred solution: Full refund

User's recommendation: Dont buy this product

View full review
1 comment
Guest

I think this must be made by illegals. The lack of respect to Americans and dog-dogs makes it apparent.

Dashanae S

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer
| map-marker Stratford, Connecticut

Malfunction

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - Only one Ultra Guard Pro Max collar was inside the two-pack package.
  • - Paid $32 at Walmart; no refund or return offered.
Updated by user Sep 20, 2025

Great products you just can’t get anyone to handle the issue when u contact. Them

Original review Sep 05, 2025

Today I purchased a two pack of ultra guard pro max flea and tick collar for dogs and puppies. Although the package says two should be inside I was met with only one collar in which I paid 32$ for at Walmart I called Walmart and tried to express to them my concern they completely turned me away saying they would not take the collar back or refund my money Im dissatisfied because I purchase these twice a year for the last 3 years and Ive never had this issue it works well for my pups but this was so unacceptable

Loss:
$32

Preferred solution: Full refund

View full review
Diana H Uva

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Zero stars....my cats fur was melted off!!

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - A dog ripped off a Hartz collar; skin irritation.
  • - Cat wore it for 5 days; fur damaged and removed.
  • - All pets have hair loss; Amazon refused refund.
Hartz - Zero stars....my cats fur was melted off!!

I bought Hartz after doing some research, apparently not enough! I bought 6 total collars, 5 for the dogs and one for my cat.

One of my younger dogs ripped his collar off within the first few days; his skin was so irritated that he tore it up! My cat was wearing it for 5 days. I picked up my cat for some daily loves, and I'll be damned that he had some sores. I took off the collar; his fur where the collar was is completely gone!

Clumps of fur melted to the collar! I took photos and threw that horrid thing away. I also ripped them off all my animals and threw them all away. My middle dog has lost so much hair!

None of them are scratching anymore, but they are all losing hair all over their bodies. I'm so pissed off about this right now; I want to get my money back, but Amazon is refusing.

Loss:
$36
Cons:
  • Burn your animals skin removes their hair mainly where the collar goes animals loose hair all over their bodies

Preferred solution: Full refund

User's recommendation: Do NOT BUY HARTZ PRODUCTS IF ANY KIND!!!!

View full review
Heather B Pgd

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Toys broke in less than 24 hours

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - The Cattraction rope-mouse toys unraveled within 24 hours and are not well built.
  • - Bell fell off a toy.
  • - A bell piece was scooped to prevent swallowing.
Hartz - Toys broke in less than 24 hours

I bought the Cattraction rope-mouse toys with catnip and silvervine yesterday. The first time my cats played with them, both unraveled and the bell fell off one, all within 24 hours.

I scooped up the tiny bell part to prevent my cat from swallowing it! These are not put together well at all!

Loss:
$3
Pros:
  • Cats like their treats
Cons:
  • Toys break too easily

Preferred solution: Full refund

User's recommendation: Don't buy Cattraction toys from Hartz

View full review
Featured
Latha B Hot

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer
| map-marker Batesville, Mississippi

Lethal

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - Kobe had tremors after Hartz Ultraguard Pro; treated in hospital.
  • - Vet says no antidote; monitor pets for adverse reactions.
Hartz - Lethal
Updated by user Oct 05, 2023

Still waiting for compensation

Original review Sep 05, 2023
We almost lost our dear sweet Kobe, only 2&1/2 years old. Three days after giving him a Hartz Ultraguard Pro flea/tick treatment, he started losing balance and having tremors.

We rushed him to the hospital where he was given iv fluids and bathed several times to remove the medication residue from his body. The vet confirmed that he was having an adverse reaction to the medication and said there is no antidote and it was just us waiting to see if he would make it. We were heartbroken watching him shake uncontrollably for over 20 hrs straight. We brought him home, held him, fed him sugar water every 30 minutes throughout the day and night.

Prayed. Finally, at about 6am the following morning, he stopped shaking and subsequently regained his balance at about 9am. We bathed him again. Kobe survived .

He was one of the lucky ones who made it. Please read up on these products and keep a close watch on your pets if you decide to use it.
Im sharing this to warn all doggie and kitty parents to be aware of this devastating and potentially lethal side effect of these medications. A warning should be a black box warning, but its only in small print. Please keep close watch on your furry babies after administering these meds.

These side effects can happen anywhere from minutes to 72 hrs later and even if theyve had it before without an issue, per our vet. So many reports of adverse reactions , many resulting in deaths, have been filed against Hartz flea/tick products.

The flea collars have been reported to have a lot of incidences of adverse reactions as well. Cry.
Loss:
$297
Cons:
  • Potential of severe or lethal adverse reactions

Preferred solution: Would like my vet bill reimbursed to me

User's recommendation: Be wary!

View full review
17 comments
Guest

Wow! I am so sorry to see your fur baby go through that.

I’m glad he pulled through. I’m hoping you took action against this company? I don’t use any type of flea medication on my cats. They don’t go outside.

I didn’t use any on my dog either when my dog Hank was alive. I don’t trust any of it.

Guest

I foster and I guess I don't know what people do to keep these things from making their way into your house/bed if they do not use preventatives .

Guest
reply icon Replying to comment of Guest-2550022

What did people do before these were invented? Actually there are a few safer ones eg revolution

Guest

Don't like using these meds or the annual jabs for dogs but unfortunately kennels and dog boarders won't take them unless they're upto date with all their innoculatiins and kennel cough too. All this pesticides

Guest

These should be banned as many others !!!

Guest

It needs taken off the market. How many does it have to kill before you do.

I’m 72 years old and I remember it doing that to cats and dogs when I was young. It was flea dip then

Guest

We have a German Shorthair Pointed that had a terrible seizure from that flea and tick medicine. I choose no longer to give my dogs poison.

Guest

So happy Kobe is ok

Guest

Our 7 year old Pug had a seizure after giving him this…NEVER again.

Guest

I have never and will never put any type of sprays etc.. or give my dogs medication for fleas or ticks, go natural on everything you can including making their food.

Guest

Same thing happened to my 6 month old pitbull

Guest

I’m so glad Kobe recovered that was hard for me to watch, I can’t imagine how you must have felt. The main thing is Kobe is recovered and doing wellI have heard good things about the Furlife collars for fleas/ticks. They’re all natural no chemicals and their reviews are awesome!

Guest
reply icon Replying to comment of Guest-2525542

Furlife collars are made in China and are not natural or recommended

Guest

Not gonna lie...that's hard to watch. Glad your pup recovered.

Guest

This is why I don't use any chemicals on my dog. Vinegar and water rinse is what I have used since my shih tzu had his first bath.

Guest

THANK YOU FOR SHARING. I WILL SPREAD THE WORD. GOD BLESS.

Borden Wsn

I’m so glad this beautiful baby made itGod bless you guys for immediately response taking him to vet and seeking help. My prayers are with folks who just don’t know what to do and these poor babies. I pray everyone sees this Thank you

View more comments (16)
Carol D Zxb

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Recycling

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - Packets are not recyclable; only the box is recyclable.
  • - The reviewer asks the company to create recyclable packaging from creation to disposal.

Please consider creating recyclable delectables cat food packets. The box the packets come in is recyclable but not the packets themselves.

It is your responsibility, as a large company, to follow your product from creation to its final disposal. It could be a real selling point for your product! I'm sure I'm not the first person to ask you to put the time and money into creating a recyclable product. Thank you for your consideration.

If we work together we can heal our planet.

So far, it's the only one we have! Sincerely, Carol Dunn

User's recommendation: Don't buy until Hartz comes up with a recyclable product

View full review
Anonymous
map-marker Little Rock, Arkansas

Advertising problem

AI Highlights
  • - Bought a cat product and found a Hartz logo on the back.
  • - They claim Hartz products are bad and the back label was to mislead buyers.

I bought delectable a for my cat and never knew that hartz were putting their logo on the back and i had been knew about how bad their products were. That was proof right there they know what they doing killing peoples pets, they know deletables werent gonna get sold as much thats why they put that damn label on the back!

View full review
Joshawa Xjw

My dog ended up almost choking on oinkes porkalicious chews

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full
AI Highlights
  • - The chew came apart and lodged in the dog’s throat, causing gasping.
  • - The reviewer wouldn’t recommend it.
Hartz - My dog ended up almost choking on oinkes porkalicious chews

I gave my dog one of these chews, later heard him gasping for air to find it was coming apart and was lodged down in his throat. I never feed him raw hide.

As this says its not made from beef hide.

I feel this is false information cause it definitely was being consumed like it. Would never recommend if you value your fur babies

User's recommendation: Don’t BUY them!!

View full review
sattam a Cgb

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Request for Rate Adjustment

AI Highlights
  • - I booked in advance with Hertz and paid $109, then upgraded at pickup and was charged $81; I request a reconsideration of the charge.
Hartz - Request for Rate Adjustment

Hello,

I hope this message finds you well. I made my booking in advance to secure a good rate for my trip. As an international student, I travel every year from Pittsburgh International Airport to Dulles International Airport for my summer vacation, and I often rely on different car rental services. Hertz has consistently been one of my favorites due to the excellent service I've received in the past.

However, I was disappointed with my recent experience. I made a reservation and paid $109 three weeks prior to my scheduled pick-up date. Unfortunately, due to unforeseen circumstances, I had to upgrade my car at the time of pick-up and was charged an additional $81. I had no choice but to accept the upgrade and pay the extra fee. While I understand that upgrades may incur additional costs, I was surprised by how high the extra charge was in comparison to my original payment.

As a loyal customer, I kindly request that you reconsider the rate for this rental and adjust the charge if possible. I truly value the service Hertz provides and hope to continue booking with your company in the future.

Thank you for your time and consideration.

Take care,

Sattam AlGasim

Preferred solution: Price reduction

View full review
2 comments
Guest

Your upgrade charge was only $30. The other $51 are fees, insurance and taxes that were on top of the $109 whether you upgraded or not. If you did not upgrade your total would have been $160.

Guest
reply icon Replying to comment of Guest-2712890

Hello I am writing to kindly request a rate adjustment for my recent rental. I have never encountered any issues with your services before, and this unusually high charge is quite unexpected for me.

As a regular customer who rents a car every year for my trip from Pittsburgh International Airport to Dulles International Airport, However, this recent fare seems unusually high compared to my previous experiences. I would greatly appreciate it if you could review and reconsider the charges applied.

Thank you for your understanding and cooperation. Warm regards, Sattam AlGasim

View more comments (1)
Mujahid Tsn

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

No way

Was unable to contact Hartz regarding my cat dying from using their flea collar. The other 3 cats are showing symptoms from the collar.

View full review
Michael d H

This review is from a real person who provided valid contact information and hasn't been caught misusing, spamming or abusing our website. Check our FAQ

Verified Reviewer

Flea medicine killed my cat

stars-rating-full stars-rating-full stars-rating-full stars-rating-full stars-rating-full

Your company sucks I'll never buy anything from you again you don't care about pets you just want the money no matter what

User's recommendation: Stop putting poison in your flea medicine

View full review

About

Summary

Hartz is a privately owned company which specializes in manufacturing of products for pets. It was founded by Max Stern and Gustav Stern in 1926. The headquarters is based in Secaucus, New Jersey, United States. Hartz offers products for dogs, cats, birds, reptiles, and fish. Customers can order toys, training aids, grooming, and health & wellness items. It is also possible to purchase accessories. Hartz has a chain of distributors nationwide. The company accepts returns. It has the Hartz Mountain Research Center where veterinarians, entomologists, engineers, chemists, and nutritionists research and develop new pet care products. Hartz offers coupons with discounts for different products.

Hartz reviews and complaints

Hartz is ranked 159 out of 1368 in Pet Stores category

Area Served

USA

Why Trust Reviews on PissedConsumer?

  • Professional auto and live moderation
  • 100% user-generated content
  • Equal opportunity and protection
  • Zero tolerance for fake reviews
  • Verified content
  • PissedConsumer is on the Inc. 5000 list

For more information read Blog article