WE use it in thier shampoo and have an oil mixture of Tea Tree, PennyRoyal, and grapeseed oil.
It has helped thier coats. I wouldn't use this recipe during flushing, estrus, or during pregnancy because of the PennyRoyal, but you can while milking, just be sure not to get any on the udders. We brush some on very lightly over coat then use a papertowel around the polls to get in deep.