Pretty.
I've used DE for mites in the past, you have to dust like once a week for two or three weeks. Wood Ash also works well for that, same practice though. I don't know about the eye though.
Something I've picked up over the last couple years is that parsley is quite high in niacin, I hatched a duckling last week that had wry neck and after three days with parsley in its food I can't even tell which one it is. I've fixed wry neck in several ducks with parsley, I don't always have...