Here are some posts related to my own experience:
https://forum.hearingtracker.com/t/dryers-actually-helpful-or-not/47845/58?u=jim_lewis
https://forum.hearingtracker.com/t/dryers-actually-helpful-or-not/47845/45?u=jim_lewis
Pharmaceutical grade 2% acetic acid was what I was prescribed for my infection. Cost me $10 co-pay and retail cost $38. A single bottle lasts a long time during treatment at 4 drops per day twice a day in just one ear.
https://www.akorn.com/prod_detail.php?ndc=50383-889-15
The slight amount of olive oil that I now use on the HA molds just before insertion helps lubricate receiver insertion into ear canal. Basically, be gentle inserting and removing HA’s or as described in articles I cite in links, abrading ear canal skin can be a source of infection. According to articles, sticking Q-tips, fingers, etc., in your ear canals can be bad news, too.