Caillou – We still miss you

I applied hartz to my cat and within minutes he was drooling all over himself and acting as if it was physically painful. I immediately washed it off with soap and water but Caillou continued to get worse. Within an hr he started having seizures so I rushed him to the vet where he was put on IV fluids and sedative to stop the seizure activity but to no avail. Caillou passed away early the next morning. Our family suffered to loss of a very special cat all because we were tryinging to make him more comfortable by treating his fleas.

Sick dogs

I put Seargents flea stuff on my chihuahuas and they both got very sick for days. It is also odd they both got infested with ticks 5 days later. They had no ticks prior to putting this crap on. It was like it attracted them. I bought a Bayer brand soap to kill the ticks and get them off. I will never use this cheap Sargeants stuff again. I normally switch from Advantage and Frontline but I did not have any and thought I would try the cheap stuff. Never again!!! You get what you pay for.

Somebody help me please

I purchased Hart’s ultrafast guard for my dog a year ago from Canada and brought it to India.. I used it on my dog maybe once or twice and never noticed any behaviour changes.. I went back to Canada.. Now I moved back to my home country (India – where my dog is) and brought along my 2 kittens who are 9 months old. Since fleas and ticks are by the dozen here and my dog is susceptible to them I decided to use some on my cats because they seemed to be more itchy since being here. It’s only been 20 days for them in India.

I do not know if the medication was expired. I just used 1 tube between the two cats (and yes, this was meant for dogs – I am cursing myself more than you can imagine)

I think the female got more than the male. Right after I put it on her she went around running trying to get it off but I thought that’s normal as that’s how they’d react to water drops on them. 2 hours went by and things did not improve for her, she had locked the spot where I put the medication and vomited foamy stuff immediately I thought that was because of the medication but nothing serious. By 3 in the afternoon I had to shower her off as she seemed to be going insane because of the medication. Things have not imported much since. I took them to the went they got Iv druids only about 100 ml and about 1.5 syringe of charcoal in water. I showered the male kitten after coming home but that made him even more itchy than before.. Their fur is all over the place. I’ve been reading horror stories and now don’t know what to do..

Please somebody tell me what else I can do. I used the dog product on them.. I was only trying to keep them itch free instead I think I’m killing them now. My dog is still doing ok though I did not feed him dinner and he didn’t ask.

Both my cats are sleeping now but I can tell they’re agitated. We don’t get dawn here in India.

Cheese, You Lucky Bastard!

My girlfriend and I just today noticed that one of our two cats had a bald spot on the base of her tail and some bite marks near her face with some scabbing. We figured she had fleas so we went to Walmart to get some medicine. We went down the cat aisle and found a product that was fitting our exact needs! Hartz Ultragaurd Pro for cats over 5lbs. Purrfect!
We first “medicated” the cat with the fleas in question, then figured it would be a good idea to “medicate” the second cat that lives with her. Cheese was the second cat. She is a 5y/f cat with no previous medical history or problems.
The Hartz drops had no effect on the first cat, but immediately showed its true colors on Cheese… the loving cat that didn’t need any treatment in the first place. Within minutes, Cheese raced around the room running in circles. She was hissing, open-mouth breathing/panting, scratching like crazy, hiding in strange places and was shaking.
We washed Cheese off with soap and water. Although she was mad about the water (like most cats), and the burning sensation we unnecessarily put on her, she seemed to calm down. But she still wasn’t quite the same. That’s when I called the 24/7 vet clinic.
It turned out that Cheese had an allergic reaction to the Hartz product and that is not uncommon. The vet explained the effectiveness vs the risk of this (cheaper) product, greatly emphasizing the risk. This is a PESTICIDE put on your pet! TOXIC CHEMICALS!
Cheese seems is doing better but still isn’t acting like herself. The other cat is fine as of now. I cant believe today started as finding a treatment for one cat and sending another cat, Cheese, to the E.R. I cannot believe how irresponsible I was to self-diagnose my cats and to use this product before doing proper research. Hartz is evil and will never buy or use their product(s) again!
Please, if you are reading this, I found this website after visiting the vet and realized Cheese was having seizures because of Hartz. She seems to be alright now, just a little shaken from her first car ride. She is lucky to be alive and I don’t want to give you all a sad update. Stop Hartz!


Hartz Ultra Flea and tick spray. So, I am a doggie sitter. Today, I am charged with watching 6 of the cutest dogs ever, 2 boxers and 4 shitzues. They are infested with fleas it breaks my heart. Doggie Momma told me to spray the Hartz on them, I did. She says this is what she uses. I got it out and read the label. It sounded toxic. The dogs were already lethargic and exhibiting all the signs of a poisoning. I did not use the product, I came here first. Then I gave them flea baths with dandruff shampoo. It seemed to kill the fleas after 10 mins leaving it on. It also soothed their skin. I don’t even want to toss this poison in the trash. Why do people still trash Hartz, why are they still in business? They KILL PETS AND FLEAS. This dog may die because her doggie momma, used the Hartz product on her. She is not doing well. I am glad I did not give her another dose. This product should not be an option. Just feed your dog a bullet instead. It is faster and a more humane way to go, if you want to go for the cheap. DONT DO IT!


My beloved dog is a 7 year old Pitmation who is as close to a human as she can get very loving and attention craving all the time. Bella is her name she sleeps in bed with me and flea and tick protection are important. I bought the Hartz Ultra Pro at Walmart because she weighs 45 lbs and they had a dose that seemed to better fit her weight. I had read a little bit about Hartz not being good but had also read some who said to use nothing else.. Within 20 hours of putting the Hartz on Bella she became violently ill. She vomited and had diarrhea for 2 days. She was dry heaving and so pitiful it absolutely broke my heart. I sat up with her all night debating on going to the ER Vet with her but after talking to her Vet I was told to just monitor. Bella has epilepsy so taking her to the vet causes her to have seizures so I was in a real dilemma as to take her or not. After a couple days I began giving her the chicken and rice along with Gatorade mixed with water. She is back to her normal self now but it almost time for her to have another monthly dose. While shopping around for Frontline I found this website and felt a calling to post my concern.

Hartz Flea and Tick Collar Burned My Kittens Fur Off!

I got my little fur baby a few months ago when a family friend had found her right outside of her shop and had given her to my mom who had in turn given her to me! This baby girl is my entire world and has kept me company since she was only weeks old! As a college student, I spend a lot of time at home and don’t have very much money. A roommate of mine had moved in with his dog and hardly ever bathed her so I immediately started noticing fleas in her fur! As soon as I saw that I went out to buy her a flea and tick collar. Sadly, I stupidly picked out a hartz flea and tick collar and placed it on my little angel. After a few days she started vomiting! I was so confused cause she had never done that before. Then she couldn’t put down food and was always sleeping. After a while my boyfriend noticed that she had been losing fur under the collar! We took it off and realized she had lost quite a bit of fur under the collar and it was irritating her neck! It was burning her and hurting her! As soon as we saw this, we rushed to give her a bath and watched her for the next few days. She finally got better. But i feel so horrible thinking about how I stupidly bought that collar just because it was cheap! I might have never even noticed if my boyfriend hadn’t pointed it out! PEOPLE, PUT YOUR PETS FIRST AND GET THEM THE BEST OF THE BEST. Not only that, but read reviews of any products you buy for your fur babies. Reading these stories makes me realize how blessed I am that she had made it so long after wearing it for a week. Thank you everyone for your stories!


About 10 years ago, I laid my 10 year old Yorkshire Terrier to rest less than 24 hours after putting a Hartz Flea Collar on him. I found this forum because I was recently looking for a safe flea repellent for my two dachshunds and cat.

Ten years ago, I returned home from college only to find that my Yorkie was infested with fleas. A family member was in charge of him while I was away at school but she was very neglectful and going through depression at the time (which I didn’t find out until later). When I brought him home, I purchased a Hartz flea collar for him and he seemed fine after I put it on him. The following day, I awoke to him being his normal self but within an hour he had thrown up twice. Blame it on my naivety at such a young age but I figured he had eaten some type of table food that didn’t agree with him. I put him in his room and ran out to the store with my mom. We were gone maybe 2 hours tops.

When we returned, my baby was laid out in the middle of the floor with a puddle of blood around his rectal area. We were too late, he was already gone. I cried my eyes out and looked back on everything I could have done differently. I didn’t drive at the time, I was broke, unemployed and living with my parents. It wasn’t until later that I made the association with the flea collar. He had been wearing it for less than 24 hours and now he was gone. I think about him all the time and if only I could turn back the hand of time I would have NEVER given him that flea collar, or any other flea collar for that matter. My 3 fur babies now get flea baths and I’m still in search of an all-natural, safer option.