I use a brand called "ProEar", Petedge sells it. Also, the linked site has some of the best information about ear cleaners, (and other dog health articles)...several home-made cleaners. I've a friend that has used the one with Betadine,vinegar, alcohol and boric acid.
Chinaroad Lowchens of Australia - Ear & eye diseases, cleaning, care & tips for your Lowchen or any other canine breed