I have one Mini Lop buck with a bad case of "Walking Dandruff". I have been treating him with Ivomec injection for cattle and swine. I've been giving it to him topically between his shoulder blades, but it hasn't seemed to clear up. Is giving it to him orally better than topically? The poor guy is so itchy, I rubbed some oil onto his back today to try and suffocate the mites and give him some relief. I've also been treating the surrounding area with DE. Has anyone found DE to work on mites? I appreciate any suggests on how you treated mites in your herd. Thank you.