In my experience, infections are sporadic. I wouldn't borrow trouble by worrying that your kitty's ear infection will return after the course of antibiotic treatment is done.

With old cats, a very common cause of infection is tooth decay, and this can lead to infections in the sinus cavities. (At age 19 most vets would agree that anaesthesia to do a dental is too dangerous, and would just treat infections with antibiotics rather than address dental decay.) Sinus infection is something to watch for, ie discharge from eyes or nose and/or shaking his head in discomfort, and an annual blood test can reveal infection if it is present elsewhere in a cat's body.

I'm glad your cat is doing so well despite this minor ear infection, and hope he will have more golden years ahead of him.

Thanks Spedigrees. The vet did check my cat's teeth. There is some plaque, but as you mentioned, anaesthesia for a dental cleaning has risk at my cat's age, and the plaque isn't serious enough to take a chance. There is no infection in my cat's mouth, and no eye or nose discharge. He last had his regular biannual (cause he's old) checkup 4 months ago, and there was no infection revealed in the blood tests.

The vet also felt the topical medication would be best, rather than oral antibiotics. The cream seems to be working really well. My cat was eating just so-so when his ears were bothering him, but now that he feels relief, he's eating with his usual gusto and enthusiasm.

I am just concerned that the ear infection, which came out of nowhere, could return. Perhaps I should be feeding him probiotics to fight the "bad" bacteria? Any other advice or feedback would be welcome.

There are gentle ear cleaning/drying products that the vet might supply and let you use once a week.

I was instructed to use the product below on my cat who also had idiopathic ear infections, and it did keep them under control. Again, talk to your vet.

Here is a link that might be useful: Epi Otic

I like tea tree oil based cleaners. Most of the time, if you clean the cat's ears once every 2-4 weeks with a very gentle cleaner like that, you can avoid infection recurrence.

Glad you are taking such good care of your kitty. Most people do LESS for cats of that age when in reality they need MORE care. You have a very lucky cat.

Meghane, thanks for the suggestion about the tea tree oil based cleaners for cat's ears. I would like to use those. I googled them, but came up with so many different brands. Is there a particular brand you like? Also, please feel free to email me via my GW MyPage page if there are brands you'd prefer. Thanks.

Well, now I do not know what to think. I was looking on Amazon at tea tree oil based cleaners for cats, and there was a review saying tea tree oil is very toxic for cats and should never be used to clean their ears. I trust Meghane more than some unknown on amazon, but nevertheless, does Meghane or anyone have any comments? (linked review below)

Here is a link that might be useful: Review of Tea Tree Oil Cleaner on Amazon

I think that very dilute tea tree oil is okay. The few credible reports I could find indicated that owners were applying the oil directly to the cats without dilution. I won't use any essential oils on or near my cats because I don't know what a safe limit could be, or if there could be a cumulative effect. And I'm paranoid about things like that.

Tea tree oil is very poisonous to cats. It will kill them. Do not keep tea ree oil products in your home if you have cats. It is extremely poisonous for cats. It sucks that an internet marketer trying to peddle their junk and doing SEO is putting pets at risk for 11 years.

The one question I have about this thread is - do these vets actually identify specific bacteria that actually need to eradicated with antibiotic or are they just guessing and throwing a drug at a problem (like happens with humans overprescription of antibiotics). If the latter - look at systemic issues. My cats both had brownish discharge and constant scratching of ears until they were diagnosed with hyperthyroid and treated - then it completely cleared up. Ear discharge is on no lists of hyperthyroid symptoms , but yet since hyperthyroid speeds everything up and throws body metabolism so out of whack - its not unreasonable to conclude there was a connection.

Agree that using ANY reported toxic substance on or around cats should be scrupulously avoided. Consider that cats are doubly at risk - because of their habit of obessively licking and cleaning themselves they are going to ingest far more of anything than another animal woud.