I went to the co-op today to pick up my order of feed and I asked if they sold DE. I was surprised that they did; however the man helping me did not know whether it was food grade or not. He said the only thing he did know about it was that they carry it at the request of a few people in our area that grow their gardens organically. Here's what the label says: Earthsafe Organics (that's the product name) Diatomaceous Earth, Non-plant food product The only precautions on the label says: We recommend wearing a respirator or maske when handling this OR any dusty powder. Avoid contact with skin as DE can act as a drying agent. Is this the right stuff? It wasn't expensive, so I went ahead and got some figuring I could use it in my garden if I can't use it with the chicks.