I know that there are recipes online to make your own ear cleaner... I use the Earth Bath shampoo in the white bottle, is all free of dyes, scents, etc. We also use witch hazel on their chins after bath time to give them a scrub and help with blackheads there. Coconut oil is great too to help remove stubborn dirt (before their baths).
If you are big into doing things as naturally as possible, you may want to look into feeding a raw diet as well. It is nice to use simple remedies for things, but just be cautious of everyday items that can be harmful to kitties as well