My dh insists on buying ear cleaner for our dog but I checked its ingredients It has alcohol and aloe and some cleaning agent and water. I bet you could just swab your dog's ears with a bit of alcohol and aloe mixed together.
I use diluted rubbing alcohol (it dries quickly) and cotton balls and q-tips.
Use the cotton ball on your finger and sweep it into the ear. Use the q-tips for around the folds (depends on the breed...my lab has hiding places in her ears). Do NOT put anything down the ear canal. I also do not pour it into her ear as I do NOT want to be wearing alcohol and stinky dog ear wax.