Hartz flea & tick collar chemical burn [photos included]

This story & photos came in via email from Angela:

“I will NEVER use another Hartz pet product again!!! I bought flea and tick pet collars for my pets and this one must have had a chemical burn happening to my cat I didn’t notice right away.  My son went to pet the cat and thought he felt something on the cats neck and sure enough this is what we found! Took his collar off to find this burn from ear to ear!  I PRAY this doesn’t cause any permanent damage! I am NOT a happy camper and other will see pics and know what this product has done to my cat so it will not happen to others if I can help it! I sprayed his neck with pet hydrocortisone spray hoping that will help. Will have to call the vet in the morning!”





16 thoughts on “Hartz flea & tick collar chemical burn [photos included]”

  1. OMG that is one nasty chemical burn. You can also use Neosporin on it. I can’t believe that Hartz could look at this and not feel so guilty. Let us know what your Vet says. Give the cat an extra hug from me.

  2. Oh I am so sorry! I gave my girl a dose of Hartz Flea and Tick Drops plus + about a week ago and the back of her neck looks almost the same but from the drops. She has lost a huge chunk of hair. I bathed her to remove it and am treating it with Neosporin as Andrea mentioned above. It is healing but I am hopping mad at Hartz!

  3. Looking at the wounds, I don’t think it was the flea collar. It looks like an embedded collar was the cause. Unless you had the flea collar on too tight? Why would you wait another day to take the obviously in pain cat to the Vet? But you had time to type a long winded story. The wounds could get so infected that it could kill your cat. That would take a long time for a wound on the neck to look like that. You must have had the collar on for a long time, embedded in the poor cat’s neck.

  4. The same thing happened to our cat quite a few years ago. We used a flea collar on her and like you didn’t notice that anything was wrong until our son was petting her a few days later. We took the collar off right away and threw it away. We cleaned her neck gently with warm water and kept polysporin on the raw skin until it healed. Luckily there was no scaring and her fur grew back in. I felt so bad that we hadn’t noticed sooner. And to the person who accused you of having the collar so tight it was embedded in the neck – we didn’t have the collar on tight. I was taught since I was a child to always make sure you can get at least three fingers between the collar and the animal’s neck – most times I do four fingers just to be sure. So the collar wasn’t tight. It was a chemical burn. It looked almost exactly like your cat’s neck. Use either the polysporin or neosporin, that’s what the vet told us to use. Just make sure that your cat doesn’t scratch it open when it starts healing and the scab gets itchy.

  5. @ Katt1-she prob didnt take the cat to the vet right away because in some towns-like mine- its appointment only or certain times for walk ins and maybe some ppl just cant afford a trip to the emergency room. I just bought this product and it stopped the itching and didnt cause burns but I use it very sparingly,now Im not sure Im gonna use it all-thanks for posting!

  6. This just happened to our dog! We discovered it last night when we were petting him! I was hard to see, as he is an incredibly furry dog and does not exhibit pain symptoms.
    @Katt: I think you comment is incredibly disrespectful. We also have to wait to see the vet, as our clinic is not open on Sundays and I prefer to see his usual vet, as our dog also suffers from an autoimmune disorder. And, no, the collar does not need to be “imbedded in the fur”, as you stated. Our dog had his collar on and the flea collar on, both very loose, and it still happened. I will never use this product again on our dog. Thank you for posting these pictures of your cat, to get the word out to other pet owners! Good luck and a speedy recovery to your cat!

  7. There must be something we all can do to stop our animals from ending up like this this product needs to be taken off the market. I am going to e-mail them until they are sick of me.This there is no excuse for.

  8. @Katt1…We have the same results from the Hartz flea and tick liquid so don’t discount what the other person was saying about the Hartz flea collar… We noticed a dime size redness a few days after we treated him with the flea liquid. Thought it was because he didn’t like the medicine, first time we he had flea medicine and was licking it (which we stopped him when we seen him doing it. Now it is 5 days later and he has lost all his hair in that spot with bright red, swollen area being the size of a 1/2 dollar now! We are now washing it daily and applying neosporin…according to our vet this should work. If we do not notice a change he goes to the vet on Tues…

  9. I Have a 2 yr old Pitbull. I have been using hartz from the day i got him.. I recently gave him a bath and applied some of the liquid on his back.. the next day i noticed his hair didnt look normal, so i was using my hand and rubbed him and notice that he was full of red bumps and very tender looking.. it looks as if he got a chemical burn from the drops this time.. i have been treating him with benedryl and it is now on day 4 and it has seemed to have went away.. I will NEVER use hartz again.. i am not a very happy dog owner.. I dont understand why it did this after using for 2 yrs..

  10. I have always bought my cat & dog flea medicine at the Vets office.
    For the first time ever I bought Hartz from Walmart, for my cat. Unfortunately I didn’t research Hartz beforehand. My cat has suffered a chemical burn on the back of his neck. It breaks my heart! The skin is bright red, blistery, and his hair has fallen out where the drops were placed. I will be returning the rest of the “poison” and posting anywhere I can about this dangerous product. Hartz! Be forewarned you are next ony list to contact. How dare you sell such a product!

  11. We put the Hartz flea collars on 6 days ago onto 3 cats…wish I’d known sooner! All 3, none of them related in any way, have the burns. One is pretty mild, just a quarter sized spot of missing fur and slightly irritated skin, one is all the way around his neck in a perfect stripe with missing skin and medium irritation, and the other goes from ear to ear and has progressed to a “V” about 3 inches down his chest! They weren’t too tight, either. The cat that is affected the worst, we had to PEEL the collar off of him from the oozing and we did that at day 4, but the other 2 looked ok, so we figured just an allergy. The other 2 just have thicker fur and it took a little longer, I guess. I bought them at Walmart, still have the receipt, and they will be getting the collars back along with a pic of all 3 cats so they can see the damage a product that they sell does! Hartz will also be hearing from me, and I have heard there is a class-action lawsuit filed that I will be checking into! Absolutely furious!

  12. THis happened to our baby girl. Collar not tight and not left on long it was only maybe 3 days. My son noticed it and I took it off right away. We washed it down and started to heal but it is still bad. What is the lawsuit and can we get in on this? My poor furbaby and her neck I feel horrble for what it has done to her.

  13. i put topical treatment 2 days ago and now my cat is missing fur and has a dime sized burn..i am angry..i washed her and are treating her with neosporin with pain relief…they have to stop selling this crap..

  14. My cat has a very bad burn on her neck, guess what its from? Hartz ultraguard flea collar! What the heck? Collar WAS NOT tight and she DID NOT even wear this collar for a whole month!! I am ANGRY.. I’ve used the flea drips on both my cats and dogs and I’ve never had this happen before, these collars need to be taken off shelves!

  15. Do you have a question about a Hartz product that was not addressed in our FAQs? If you have not found an answer in our FAQs, please write to us or call our hotline.

    Write to us
    Consumer Affairs and Information Center
    The Hartz Mountain Corporation
    400 Plaza Drive
    Secaucus, NJ 07094 USA

    Call us
    Monday – Friday 9 am – 5 pm EST
    If you think your pet needs medical attention, please contact your vet immediately.
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