Hartz 2in1 Flea and Tick Spray

I bought Hartz 2in1 flea and Tick Spray and used it Twice in @ week’s on My Rottwieler’s . My oldest rotty {rebel} strrted Loosing control of his Muscle Control in his Back Legs though it was only Minor in Him . BUT My other Rotty { Max } HAS LOST TOTAL CONTROL of HIS BACK LEGS !! I have Wasked Both Dogs TWICE and Rebel has Recovered and Got Muscle Control back in w week ! BUT MAX Has NOT YET !! IT’S Bad Enough that He has to be Have his Back Quarter Lifted Up and Carried So He Can Walk . and it’s Worse that He CAN’T WITHOUT HELP GO OUT and USE THE BATHROOM He Just did it right where He Layed . NOW THATS BS !!! He tries to Move Around BUT Has to DRAG his BACK QUARTER . HARTZ NEEDS to NOT PUT ANY PRODUCT THAT THEY WOULD NOT USE on THEIR PET ON THE MARKET !!! ALSO a LAWSUIT NEEDED TO BE BROUGHT AGIANST THEM . Has ANYONE ELSE HAD this Problem with Their Pet { DOG } ?

Have any dogs or puppies had symptoms like Parvo after Hartz use?

I have used Hartz Flea and tick drops a couple of times on my Cats and Dogs. I had asked my Vet. if the drops make pets act drugged and lathargic, because my pets always react that way after the application. Her response was “No.”
After reading some of the stories at this site, I realize my pets have displayed many of the same symptoms, running around wildly after application, then being lathargic (as if drugged) for the next few days. I’ve also seen them shake, shiver. After speaking with the Vet. I thought my pets were just trying to get my sympathy, because of the gooey messes in their hair and on their skin; and to my dismay, while looking for information on what flea pesticides were safe for cats, (I still, did not want my cats ingesting the drops while grooming themselves) I happened upon this site and I am just flabbergasted that I’ve never heard any of this before. But, this is not my reason for writing…
I want to know if any dogs or puppies developed symptoms and were diagnosed as having Parvo? Parvo, has similar symptoms to what has been described in several of the articles… Diarrea, vomiting, dehydration and so on… I had one of my puppies develop these symptoms after using the drops, at the time I had felt that my puppy’s illness was not Parvo, but did not associate it with the flea and tick drops at all.
My puppy (Maggie) was about 9 months old, I had two other puppies (same age) and a older dog that did not get sick (with Parvo symptoms) at all, but Maggie was deathly ill for about eight days, before we could get her to take sips of pedialite and licks of baby food, it was almost another week before she ate on her own and several weeks before she gained her weight back and seemed more like herself. We kept her alive by IV fluids, love and devotion. I stayed with her constantly, keeping her warm, trying to soothe her pain and talking to her, even rousing her during the many times she began slipping away. This little dog did not not take a drop of food or water during those eight days , the IV fluids were her only sustinance, though the constant vomiting, diarrea and her pain did not subside. There were moments during those eight days, I thought I should just stop the IV and let her go because she was suffering so horribly, but I love that little dog and every so often, she would nuzzle my hand with her nose or look up to see me, seeming to be comforted that I was there. We made it through those dark days.
I had experienced Parvo with five Dalmatian puppies several years ago, when they were about 7 weeks old. All were at different stages of the virus progression when we discovered they were sick, two became seriously ill. Thanks to an outstanding Vet. (now retired) who gave me antibiotics, compazine, pedialite and instructions of what to expect, what to do and how to tell if they were dehydrated… (He said dehydration is why many animals don’t survive, not limited to Parvo but any/all illnesses.)
Most of the Dalmation pups were recovering the next day, one puppy took two days and another took four days before showing signs of recovery. All of the puppies were not at the same stages of illness, but each displayed the same progression and patterns of symptons. The ordeal was awful but still does not compare to what Maggie went through; because of this previous experience with the Dalmatians, the two other puppies not getting sick, her being an older puppy to be so severely affected, and the amount of pain she experienced; I just could not believe it was Parvo and questioned if she had been poisioned.
Maggie is now fourteen months old, back to her bouncing self. She has become quite protective of me and becomes distressed when I am not in her sight or leave the house, but does seem to be relaxing somewhat, recently. She is not constantly on my heels in the house, and no longer howls at the door while I am gone. According to my husband, she, now sits in the window and patiently awaits my return.
After reading the articles here I’m inclined to think she was poisioned by the Hartz drops, and that is why I would like to know if anyone else has had a simular experience?
**Because it is so important, I want to try and explain how to check your four legged pet for dehydration: Gently tug/rolling up the skin near the bottom their ribcage until you have a skinfold of about 1/2 inch and release. The skin, normally, will be elastic and return to it’s smooth shape upon being released, if the skin seems slow returning to it’s normal shape or stays folded for any length of time, then your pet is most likely dehydrated. Please, contact your Veterinarian right away.


I feel horrible after viewing those pictures and I never knew this site existed. I hope your cat and all animals are recovered and recovering from the Hartz Nightmare.
My indoor cat started scratching like crazy and I had seen 2 fleas that landed on me within 2 months. He never scratched until maybe after 2 months.
Not thinking it was too bad my boyfriend purchased the Harts Flea Spray and I sprayed him.
My Cat became lethargic, eyes were not normal, ran several times to the litter box and then just laid down panting.
After smelling what was coming out of the spray can I thought ~~~”What Did I Do.”~~~my own skin started to burn and turn red.
I went online and saw the horrors from other users of Hartz.
Before I saw the Online Horror I Took my 25 pound cat Mr. Minnew and put him in a tepid bath in my bathtub and tried to get the OFFENSIVE Hartz off of his skin and fur. I am 105 pounds and keeping my minnew in that tub was not an easy feat but I knew I had to get the poison off.
NO such luck~~its like an oil,some of the stuff is still on him.
I have an appointment for My cat at the Vets first thing in the morning. After talking shortly with a 24 hour animal emergency tech~~she Stated~~Hartz will make animals go into SEIZURES among other problems!
I will stay awake all night with my cat to make sure he is ok.


I’ve not used any Hartz products since about 17-18 years ago when I learned a very, very sad lesson…

In the late 80s, I took in a litter (about 8) of kittens that had been abandoned by (sorry to say) someone I knew. They were absolutely infested with fleas. I bought the Hartz Flea and Tick Powder, read the instructions, which indicated that the kittens were well within the age of safe application.

Within a day or two, I found one of the kittens dead after I arrived home from work.

Another day or so later, another of the kittens began to convulse and was clearly in pain. We took this kitten to the vet, where, upon telling him the history of these kittens and his examination, he told me that they were poisoned from the Hartz powder!!! That kitten did not survive.

We immediately washed the remaining kittens, but, unfortunately only two did survive.

I wrote to Hartz at that time, but they never responded. This company has been marketing deadly stuff for our animals for a long, long time. Amazing that they can get away with this.