What are the safety precautions for using DE? I just got off the phone with a man at a local feed store, they don't sell the DE I need and cautioned me about how deadly DE can be. He mentioned something about inhaling it. If it slices the insect to kill it, what do you think it would do if you inhale it while spreading it around? I couldn't answer him since I don't have any experience with it. What do you guys say about it? I'd like to try the DLM using the DE, but would also like to know the pros & cons of using the stuff. Please help. Thanks!