Just take the Ivermectin orally and carefully spot where needed. If your skin itches where you spot, just apply coconut oil and the itching will go away. The coconut oil will also smother any larvae or mites that you feel crawling around on you.
Three or four doses of Ivermectin about 4-6 days apart should take care of it. It should not take more than a month from start to finish to get over these mites.
By the way, I love coconut oil. It won't ruin your clothes like all the other oils, smells great, and is so healing to the skin. Coconut oil and horse paste is all you need.
I have had these little critters four times in ten years. I have tried everything. At times I thought I would never get over them. Then I discovered the horse paste. Nothing works better than Ivermectin horse paste and coconut oil.