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My dog's ear infection medicine is greasy. Is it needed? How to clean?

Updated on September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Male | unneutered | 2 months and 19 days old | 9 lbs

Our vet prescribed us Posatex for a minor ear infection, 7 drops per ear, for 7 days. I have two questions: the vet's diagnosis is "too much yeast & bacteria" found in the swab but she says his ears look clean when using the scope, is the medication that necessary? Niko is only 5 lbs so 7 drops seems a little excessive for some minor yeast. Question 2: the suspension is very greasy and seems to get all over his ears and coat, how do we clean it off?

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 13th, 2017

Yeast and bacteria can only be seen under the microscope, which is why the vet didn't see any when looking at Niko's ears using the otoscope. I would follow the vet's instructions in treating his ear infection, the amount is prescribed precisely for treating this infection successfully even if you think it seems excessive. You can use cornstarch to get it out. Use a paper towel to remove as much of the medication as possible from Niko's fur, and then sprinkle the cornstarch over the area avoiding his ear canal. Use your fingers to rub the cornstarch into the fur to absorb the oil, and then brush the cornstarch out with a soft bristle brush.
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