My cat is trembling after Hartz flea gel. Is it a side effect?

I would not use it on my own cats. It is a harsh product on cats and I have seen a few clients have an intense reaction to it involving seizures and muscle spasms. I would instead use something like the Seresto collar. Best wishes.

Yes I would be concerned, as this can be a sign of flea treatment toxicity. I would put her into a bath immediately, and gently wash the treatment off with water water and Dawn dish soap. Continue to monitor her for signs of toxicity, including vomiting, diarrhea, muscle tremors, hyper salivation, and depression. If you see any of those signs, take her into your vet immediately. I would make sure that the flea treatment you put on Annie was for cats and not for dogs, as it's very important to have a cat dose for cats because they are so sensitive to the flea medication. I would wait a few days before reapplying a flea treatment, and I would use a different brand than what you just used. I recommend using Advantage or Revolution.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! If all you are seeing is some ear and paw twitching and both are eating and drinking I don't think they need to be seen by a Vet. I would bathed them again and go over and over the spot that the Hartz was applied to. I hope this helps and I wish everyone the best!

Hi there. Beau may indeed be having a reaction to the shampoo. I would definitely use another dog shampoo and wash that Hartz product off. If you have access to an open animal hospital at this time I would definitely bring him in to be seen. He is very tiny, and it may be that the flea shampoo ingredients were a bit much for him. The tremoring could also be because is chilly, but I just wouldn't take the chance. I definitely don't want to alarm you, but I would just take him in to see a vet.

You were very smart to wash the medication off Cookie. If you did not use dish soap, I would recommend to rewash the area using dish soap as it is very good at stripping the coat. While I cannot be 100% positive that everything is ok (as I cannot physically examine her), it's generally a good sign that she has calmed down and is acting more normal. You have two options, take her into the veterinarian or monitor her. If you want to be as safe as possible, you could get her into the veterinarian tonight for an examine as they would be the best ones to determine if there are any neurologic abnormalities or any other causes of concern. If you choose to monitor her, you need to watch her closely for increased respirations, open mouth breathing (panting like a dog would), stupor, dizziness, trouble walking, seizures, hyper salivating or other abnormalities that involve her central nervous system. If Cookie displays any of the above abnormalities, I would recommend to take her straight away to the veterinarian. Make sure that she is eating and drinking. When in doubt, take her in as its better to be safe than sorry. Go with your gut. I would not recommend to use this product again on her to be safe. Although reactions can occur with any product, I think Revolution is generally well tolerated and I routinely recommend it. You may also talk to your regular veterinarian about appropriate products to use in your area if you have specific risks like ticks. I noticed that you listed her weight as 4lbs (which would be very small for an 8month old cat) and the product is labeled for 5lbs. While it may be a typo, make sure to always use the appropriately sized product to decrease the potential for side effects. I hope this helps and that Cookie recovers normally! Thank you for using Petco Pet Education Center, formerly Petcoach.

Yes, it is safe for your kitten to be around him. i do not recommend using any Hartz products, they are terrible and side effects are so common. here is the list of the best flea products on the market. Spot ons: Revoulution Advantage Advantage Multi ( Frontline (ticks as well) Bravecto spot on (ticks as well) Tablets: Comfortis Collar: Seresto ( (ticks as well) House spary: Indoorex

No this is absolutely not recommended, first of all you can overdose her, secondly i generally do not recommend flea baths for cats, they are less effective and tend to cause severe side effects. Hartz isn't a good product either, for next time i would recommend something from the following list: Spot ons: Revoulution Advantage Advantage Multi Frontline Bravecto spot on (ticks as well) - for cats Tablets: Comfortis Collar: Seresto ( (ticks as well) House spary: Indoorex