My dog Rambo and Maddie have the Hartz Ultraguard Plus flea collars, Rambo has been twitching, and losing hair. Maddie has been losing alot of hair, and being sick.

Pet Details:

Rambo: 2 year old Yorkie

Maddie: 1 year old Golden Retriever


The Story:

My dog Rambo was born in 1/9/09 in Spring, TX, he was fine then. We picked up Rambo on 4/3/09 in Spring, TX. When he was about to turn 2 years old, he started having fleas. We bought the Flea collar at Walmart in 5/7/11. He started losing some hair when we put it on.  My dog Maddie was born on 1/31/10 in League City, TX. We picked up Maddie on 3/15/10. When she was new, she started having Fleas and Ticks. We put on the flea collar, she started losing almost all of her hair! We will take it off of both dogs forever soon and get the K9 Advantage II flea drops sometime soon. I hate Hartz for all the side effects they do for dogs and cats.

P.S: Hartz sucks! I will avoid their products forever!


Bella Stinkerella is my 3 year old muted calico. She was my mothers day gift 3 years ago after losing Pogo a muted torti. We recently adopted a 3 year old black long haired kitty from an adoption group and due to the fact that I already had 6 cats and 2 dogs I treated all cats with flea medication (dogs get it in their heartworm pill). My husband had just gone through a hip replacement so my attention wasn’t focused on my furry babies like normal. I noticed after a short time that Bella had dropped a considerable amount of weight. She could stand to loose a couple but this was too much. I noticed on a Friday. First thing Monday I took her to the vet they did labwork that required being sent out. They wanted to check function of her organs. The next day they called and said she needed to be hospitialized that she was in kidney failure. So Tuesday I dropped her at the vet and was told a minimum of 2 days possibly 4. This wasn’t a good week, the next day Wednesday was the anniversary of my mothers passing. Then mothers day was looming on Sunday and Bella had been my mothers day present 3 years prior. I was an emotional wreck. She did require the 4 day hospitilization. She came home with me having to administer IV fluids every other day and special kidney diet food and electrolyte powder to mix in her food. We did a recheck this past monday. Her levels have improved and we are now at fluids 2x a week. I will return in 1 month to do another recheck of labs and can hopefully discontinue the IV fluids. Bella has irreversible Kidney damage. They are hopeful she will survive this but with a shortened life. I have incurred over $1,000 in vet bills to date. I am thankful I had the money to be able to try and save her life and thankful for how far we have come. I will NEVER use another HARTZ product and continue to share this with friends, family, neighbors and on my facebook page. I hope no one ever has to go through what I did. This item should be removed from the shelves!


I bought hartz ultraguard plus flea and tick drops for my 1 year old wheaten terrier. I used this on him at 3 pm on saturday, a little while later i noticed him scratching excessively! I waited for a while just thinking he didn’t like the feel of it on his back… but he got worse, very restless, and sometimes crying when he would scratch. Now its 6 am sunday and he still hasn’t been able to sleep, he jumps as if something is hurting him.. After reading all the horrible stores about these products i’m really worried about what this might be doing to him… did anyone else on here have their animal react this way before they got worse? I emailed the company, I let them know that i won’t be ignored or put on hold… if anything happens to my baby, trust me, they will never hear the end of it!!!!!!!!! It amazes me that anyone would even want to sell this shit! LIKE REALLY, THEY NEED TO STOP POISIONING OUR PETS!!!!!!!!!


Our poor cat Sebastian received hartz one spot flea treatment last week and we took him to the vet and he has become toxic from the medication and his condition doesnt look good at the moment my whole family is hopeful that our big monster will make a full recovery everyone should know that hartz kills and should be pulled off the shelves and burned.

My Beagle was up all night!

I applied Sergeants Gold Squeeze-On for Dogs flea and tick on my beagle dog and it was the worst experience. About an hour after applying it on my beagle immediately was chewing crazy at where it was applied on her back. It was so bad that one of my dogs could not stay still and cried like a baby tossing and turning not be able to sleep. Needless to say, I could not sleep either! She was so tired and I felt so bad for her!. I had to put her in the bath numerous times and scrub that Sergeants Gold Squeeze-On for Dogs flea and tick product off. Not to mention it hurt them so bad when I was scrubbing it. It was awful like a chemical burn!! I used the right dosage and applied in the right areas as I have used flea products for many years but never seen anything like this. I will never again use this product and will be contacting the attorney general to help in getting this product off the shelf!

Yet another HARTZ victim

My name is Stephanie and I have a cat named Champ. He is a 1 year and 10
month old orange tabby, weighs 4.15 kg. On May 5, 2011, at 8 pm on Friday
evening, my mom, Lori,  gave Champ a dosage of the Hartz product she had
purchased from a local walmart store, in Brantford, Ontario. The Hartz product
she had given him was called Ultra Guard – One Spot Treatment for Cats and
Kittens, which is a product to control flea and ticks. Immediately, Champ began
to jump around, drooling, excessive running around the house. All in around 10
minutes, Champ had ingested some of the product which was placed on the back of
his neck, between his shoulder blades, as shown on the package and was therefore
acting out of sorts. At this point Lori watched Champs behaviour closely
at which time she noticed his mouth was wide open, looking like he was gasping
for air and panting breaths. When Champ stopped jumping around, Lori noticed he
was trying to lick the spot which is when he probably ingested some of the
product as well as absorbing into the hair follicles. Lori then decided to bathe
Champ in warm water and mild soap. He seemed to calm down slightly, but
continued to have rapid breathing as well as an unclosed mouth. We were awaken
in the morning, on May 6, 2011, at 8:28 am, to the sound of Champ’s head banging
off the wooden bed frame. Champ appeared to be having some type of seizure
activity going on. He dug his claws into the carpet, had his head lowered and he
was thrusting forward. Champ was frothing at the mouth, his eyes were
flickering, his entire body was in a tremor; even his tail was twitching, which
lead us to believe he was having convulsions. My dad, Mike, picked Champ
up and moved him away from the bed, tried to calm him down by petting him and it
seemed to have brought him to for a brief moment. Mike then got a towel and got
it wet and wrapped it around Champ. My mom, Lori then held him tightly
wrapped in the towel for comfort and noted his mouth was wide open and was
gasping for air while continuing to tremor. We then telephoned our local
veterinarian clinic, Beattie Animal Hospital Professional Corporation. The
veterinarian tech that we spoke to, stated we needed to bring him in
immediately. She informed my dad that it was going to be a $75.00 emergency fee
charge to look at Champ along with a 24 hour hospital stay with medication. Once
we arrived at the vet, Champ was diagnosed with Pyrethrin Toxicity and needed IV
medication and other medical care. The Dr. stated this is caused from the hartz
treatment. She also stated that they have treated several other animals with the
same reaction to this product. She told my mom that if we had left Champ much
longer, the undesirable might happen; meaning death. They took Champ into their
care and told us they would keep us updated after he received sufficient
treatment. After the first IV treatment we received a phone call from the
attending physician stating that he was resting and they would continue to
update us. The second call from the clinic, a tech stated an hour and a half
later Champ went back into tremors so they had to repeat the IV treatment for a
second time and would give us an update later. Champ then spent 24 hours in the
ICU. We received a call at 8:30am from the physician stating that Champ could be
picked up at 10:30am and taken home. When we went to pick him up, the physician
came out and explained the medical treatment he received, gave discharge
instructions with a prescription. Since being discharged, Champ has began to
bounce back some-what. He still has a slight twitch. I wouldn’t say he is the
same cat as before the Hartz treatment. I now sit here, trying to explain as
much information as I have.  The reason I am writing you about this
matter is that I could possibly have a cat who could occur long term physical or
mental abnormalities because of this occurrence, only time will tell. It is now
May 9, 2011 at 8:38pm and I am saddened for the trauma Champ has gone through,
along with myself and family. As a result of using  your Hartz product, my cat, Champ, was hospitalized. I have read and re-read your packages application instructions, precautions, first aid and storage / disposal information. No where on your packaging does it state that a Kitten or Cat can be seriously harmed, or killed by the use of your product. After Champs seizures and trip to the vet, my family and I have done some research on the internet. It appears that this is not the first time that an animal has been
harmed by using your Hartz products.

Hartz products are unsafe for any animal as proven by all these terrible stories on your website.. I hope we can make a difference so nobody else has a sad story to tell.


I have a three year old tabby cat. His names Newton,A very loyal shy cat that will lay on your lap and purr all night long never leaving my side. I love this cat more than any could ever imagine and so when he got outside to play,(I suppose thats what he wanted to do) I ran to the petsMart to get him flea drops. I picked up Hartz UltraGuard Pro for my cat. I applied the once a month dosage to the back of his neck in-between his shoulder blades and gave him his little friskies treat. This morning I wake to him next to me seizing I scream and look around to see if he got into anything (very unlike him) He did not I have child locks on the cabinets. He did not get into anything meant for the household. I sit there holding him crying trying to think what to do. Then it hit me the flea drops! I read the pack over and over. Nothing seemed out of the ordinary. I jump onto my laptop and Googled UltraGaurd poisoning I come to the story of the women flea dropping her cat then bathing her and the cat got better. So i bathed my cat(was not a fun job) and he seemed better. I was relieved. But then the tick like seizing came back i rushed him to Archer Vetenary clinic in lemont, illinois. They have seen this happen before, currently little Newton is in overnight care for a nerontoxin (Hertz UltraGaurd Pro)
I am Very shocked that there is no warnings what so ever on the packaging of this product. “DO NOT USE HERTZ ULTRAGAURD PRO! IT MAY HARM YOUR BELOVED PETS!” should be the warning label. It is a misleading product it is not the fun loving product you see in commercials. It rob you of a life long furry friend.

No more UltraGuard

I used Hartz UltraGuard Pro Flea and Tick Drops as directed on my 2 1/2 year old cat on 5-9-11.  She started scratching at her neck immediately and licking constantly.  Her neck, her feet, her back everything.  By morning she was wheezing and had respiratory symptoms. She also felt warm and was just NOT herself.  The respiratory symptoms seemed to subside but the constant scratching continued. We have bathed her for the last 3 days and she continues to scratch and scratch.  She is shedding so much hair from all over her body, more than she ever did before.   I found this site on the 10th and I am so sad and mad at myself for doing this to her.  The Vet has advised some prednisone for her discomfort.  Of course, I bought this stuff and because it was cheaper.   I have written the Attorney General of my state as well as Hartz.  I will NEVER use a Hartz product again.

My Sweet Shih Zu Lily Died from Hartz Ultra Guard Plus

I write this with tears streaming down my face.  My husband and I are sick beyond words.  Our precious, loyal, sweet companion passed away this week due to being poisoned by this awful medicine.  My last visions of her was suffering for 18 hours start.  This is our story…..   It was last Saturday morning and time for the heart worm medicine and a flea treatment.  My husband held our 13 lbs Shih Zu while I applied the Hartz Ultra Guard Plus for 4-15 lbs dogs, I then gave her heart worm prevention medicine.  Later that evening I noticed she wasn’t acting like herself and would shiver every few seconds.  She didn’t get any better or worse over the weekend.  This shiver thing was weird and she walked with her head and tail down.  She just didn’t feel good.  We took her in to the vet on Tuesday because she just wasn’t getting any better.  We did inform the vet that after we applied the flea medicine and gave her the heart worm medicine is when she started acting sick.  I thought maybe the combination of medicines was the problem, but he reassured me that the combination had nothing to do with it, but he was concerned about the type of flea medicine we used.   Upon evaluating Lily he did discover she had a bladder infection so it was thought that the bladder infection was making her as sick.  We took her home with antibotics.  Wednesday morning at 5:30 is when the horror began.  We woke up to her laying at the end of our bed, on the floor, seizing, foaming at the mouth, drenched in drool.   We called the vet and he met us at his office immediate.  He put her on IV to try and stop the seizing.  He informed us she had got into some poison.  Well, I know what the poison was now.  I’m the one that put that awful poison on my baby girl.  This was Wednesday morning, three full days after we put it on her.  Lily laid there for 18 hours, seizing and foaming at the mouth, the most heart wrenching sight you will ever see.  My vet said there was a chance she would come out of it and we needed to wait it out.  He called us at 9:50 p.m. and told us the horrible news that she had passed.  We are stricken with grief.  This did not need to happen.  If only I had done my research.  This stuff needs to be taken off the market!  I called Hartz and told them the situation.  They gave me a case number and address where to send my complaint, then sent me to their medical team.  They told me they would pay for an autopsy and we considered it but after reading some posts on here it sounded like they would just deny it or they would say it was the bladder infection that killed her.  We really wanted to bring our Lily home to bury her on our farm.  Hartz said after the autopsy was complete they would do a “communal cremation” … basically a bunch of animals would be burned together.  If I thought it was do some good and help this from happening to someone else, we would send her in, but I don’t think it would.  We went and pick our little girl up, my husband has her in a nice box with her bed and toys and we plan on burying her tonight.  We are heartbroken in Michigan.  Please tell everyone you know not to use this stuff.  I will be filing a complaint with the EPA and the Attorney General.  I wish there was more I could do.  I will always miss by baby girl and think this should not have happened!    Jill Gross, Michigan   [email protected]

Chemical Burn from Sargeant’s Gold

The product named Sargeant’s Gold Flea and Tick Squeeze-on for dogs caused my 6-mo old puppy to have irritated, red, inflammed and weeping skin on a large area of her neck.  The reaction began about an hour after applying it as directed and began with general restlessness, whimpering, and scratching at her neck.  I have since repeatedly washed the neck area with mild soapy water and applied topical products that are vet-recommended for allergic reactions in dogs but it is only showing more widespread inflammation on her skin and is now appearing infected.  She has a vet appointment in the morning and luckily, has shown no neurological problems so I think she will survive.  I called the Sargeant’s company (part of Hartz) and filed a concern , got a case number, and requested reimbursement for my dog’s medical bills as well as the money back that I spent on the product.  It is clear to me that Hartz needs to stop selling this product even if this kind of effect only happens to “some dogs” and is according to Sargeant’s representative, a “self-limiting” condition.  My puppy had to suffer because of their negligence and I am furious.  I will continue to warn everyone I know about this product and other Hartz products.  I also called the EPA but could only leave a message so I hope they get back to me.  I encourage everyone involved to take action.  I will be seeking out a class action lawsuit on this and other boards.