I think you'll have better results wit Zymox cleanser regularly than CO.
I've read the Internet claims about CO over and over, and when something gets repeated often enough online, people just assume it's true. So I went looking for the evidence supporting it.
The evidence of CO being antibacterial/fungal is actually pretty thin -- there's a little out there, but it's not nearly enough to justify the certainty of the Internet claims. I was pretty disappointed with what I found. (I don't count mags like DN as science (they write so much dubious stuff that they count in the "untrustworthy" camp for me...I want to see research papers published documenting the claimed effects)).
There's a paper out there that says that purified MCT and found that high levels of lauric and capric acids inhibit growth of c. diff in vitro (i.e., in a glass dish, not on or in bodies -- esp. not in places with vast ecosystems of bacteria like intestines or skin). That makes people jump up and say "those are in coconut oil, so surely we can just use coconut oil!" Nope! The same study actually tested virgin coconut oil too. The same effect was NOT found in virgin coconut oil itself -- only when it was processed and "lipolyzed." The levels of those fatty acids in the actual natural oil appear to not be high enough to have an effect. So you can get the effect from things processed and derived from it, but not from the CO itself. Let me repeat that: NO ANTIBACTERIAL EFFECT WAS FOUND IN COCONUT OIL ITSELF.
There is one study that I could find on skin that had a positive effect on skin bacteria, and it had exactly 26 test subjects who slathered on coconut oil. They did find a benefit in reducing staph (but so did olive oil to a lesser extent).
And there are also some promising developing-world studies from researchers in Nigeria and India that found very helpful effects on bad microbes.
Right now, the claims are way, way ahead of the quality of the evidence IMHO. Lots of extrapolation is being done from conflicting vitro tests and very small-scale skin studies. There may be something there that's effective against some-but-not-all organisms, and it may be found in some-but-not-all forms of coconut oil. Right now, though, it seem pretty speculative to me. I say that hoping that more research gets done, but for now, I feel like there are better options for ears out there!
Here's a human derm's easy-to-read explanation for the confusion about this:
Pediatrician's research review: