I think we're having a mite problem. I keep reading about Diotomaceous Earth (food grade - where do you get the food grade kind? co-op?) as a solution. But I've also heard that it's not the way to go? I'm confused. Trying to be as non-chemical and hands-off as possible, but I want healthy girls! How in the beans can DE control mites?? Isnt it just ground up shells and fossilized bits of earth? Is it different than "Departiculated Earth"? Thanks.