I have a dog whose ears hang low and get very little air
hence they have a tendency to get well gnarly. Recently they've
gotten a nasty rock hard growth that is not yeast (we had it checked).

But it won't come off even with some essential oils. I've used
Thieves and Purification too. Any suggestions? It could be food or
enviornmental allergies as we moved two months ago to Virginia from
NYS. Thanks, Diane