This dog ear cleaner has worked for infections where most other ear cleaners failed. It has been approved by tens of thousands of dog owners. It can be used with hydrocortisone for treating an ear infection for faster results, and without it when you're just using it for routine ear cleaning.
Dogs bark at people because in many cases, they are not accustomed to being around strangers other than their families. Dogs also have keen observation skills, meaning that they can read human body language well enough to sense suspicion or threat based on a person’s actions and bark in response.