Yes. We put a drop behind each ear on each pig. After first dosage, we did it again three days later to kill off the larvae. After that, we did it once a week for prevention.
Yes.
Watching! A few weeks ago I was treating some Guinea Pigs for mites with this, and I started wondering if it could be used to treat mites on chickens as well. (My chickens don't have mites, thankfully.)