Petco Text Logo
Petco Pet Logo

My cat has fleas, Hartz collar failed. Can I use flea drops safely?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | unneutered | 15 lbs

Hello I have a year and a half old cat and he has fleas. I put a collar on him and he's still itching, even worse than before. Is it ok to give him drops too? The brand of the collar and drops is hartz

1 Answer

Most Helpful Answer

Image profile

Answered By Rodrigo Roca, DVM

Veterinarian

Published on October 9th, 2017

Hello, I would consider using an alternative product. There has been increased number of adverse reactions with the hartz flea product and would not feel comfortable using both concurrently. I would recommend using either the collar or the drops. Alternatively, there are other products in the market you could consider as well such as advantage or frontline. Hope this helps and best of luck

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored