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Can I safely use benzalkonium chloride to clean my cat's ears?

Updated on September 23, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 30 lbs

Can I use a benzalkonium chloride solution to clean my cat's ears and prevent infection?

1 Answer

Most Helpful Answer

Andrea M. Brodie, DVM

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on July 22, 2018

No, absolutely not. Benzalkonium chloride is very toxic to cats.
Toxicity signs are (often delayed):
hypersalivation or drooling;
tongue ulceration;
hyperthermia;
oral ulceration;
inappetence;
lethargy.
hyperthermia;
inflammation or ulceration of the tongue.

Please do not use this to clean the ears of your cat or any other animal or even human.
If your cat has a discharge in her ears she needs to be seen by a veterinarian, who will determine what kind of infection she has, if any and the prescribes the proper medication.
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