I would like to start taking Moxidectin 18 days to 20 days apart, as recommended. I read Moxidectin applied directly to the skin is better than moxidectin taken orally. Supposedly, Moxidectin works very well applied topical because it remains in the fat tissue for a long time. However what would my correct topical Moxidectin dosage be if I weigh 73kg?