ear cleaning advice

My girl recently had an ear infection recently, the visit, test run, and medication, and follow up visit came to $380. she’s been a real pain about letting me do the ointment 😂 anyway i know it’s common for bassets but to avoid this in the future, what’s your ear cleaning process? I usually just use unscented baby wipes 1x a week but that may not be strong enough to kill bacteria and yeast lurking.