I haven't seen this one posted before, so i thought I'd share.
I feed my dogs grain free dog food, it seems to help minimise ear wax and ear infections and generally they seem to do better on it. However, it's expensive!
The Natures Goodness brand from Woolies is the cheapest I've found and it seems quite good. Petbarn have got a good one that's more expensive (and you have to deal with Petbarn) and for a while I was getting one from Amazon which they no longer sell.
So not only is the Woolies one the cheapest I've found, BUT it's currently on special, making it even cheaper. It was this price a couple of weeks ago, and then a few months back to the last time it was on special. I have 7 bags in the shed and will be buying more.
Seems they are eating it wrong…