Someone else has asked this question but has no reply. My local feed store is willing to order this Red Lake Earth DE for me but I'm not sure this is the right DE. I don't know if it is food grade and I don't think the feed store guy asked this question. I described what I was looking for, he called his vendor who said he knew just what I was talking about. This product is 65% DE 35% monmorillonite(sp?). Maybe someone could check their food grade bag to see if this is what is written on their bag. I did google this brand but I'm still not sure about it. Any help?