Wondering if anyone uses DE with their chickens. How do you use it? I was thinking of adding small amounts to feed, and once they move outside to a coop, dusting the coop with it occasionally, to keep down on pests. Is this how anyone uses it? Any other suggestions? Good or bad experiences? Any other info would be great. We use it for our dogs for pest control, so just looking at the idea of using it with the chickens.