hi, I am new to raising chickens and have many questions myself. I went to FAQ on Red Lake Earth (RLE) website and they talk about Food Chemical Codex and also have a video on there product including ingredients. After ready several articles I have determined that I want 100% DE. What I bout prior to my research is 95% ash and 8% moisture, maximum? with Calcium Bentonite listed as an ingredient. From what I understand that is the clay part but I find the whole thing confusing. Many say harmful to your lungs other say getting it wet via mouth, nasal passagages makes it no more harmful that breathing in flour as long as it isn't pool grade. RLE says the end product is not for human consumption while many eat it. That may have to do with how it is registered rather than whether it is unsafe to eat. Check out their site though and see if that doesn't help. I might try it because I have it now but a bit concerned because someone thought it killed their animals. This could have been a coincidence though, the evidence is certainly inconclusive as other have used it successfully . I need to do more research too!