Apparently I hit the submit button inadvertently before writing and then was unable to retrieve my text after writing, so I'll start over.
My wife recently ordered "food grade" DE from these folks. Had to straighten out a minor miscommunication and misdirected shipment, but everything eventually worked out. My wife wanted to discuss with them in a general way the health benefits of DE for horses and dogs and humans, but they were quite relunctant to do so, maybe because of recent CODEX-related FDA actions and FBI SWAT raids on small health food stores and alternative health care practioners. Some horse breeders have reported long-term daily ingestion of DE along with their normal feed to be effective against arthritis. I pesonally have been taking a couple tablespoons of DE every day along with MSM and ascorbic acid. It is tasteless and odorless and is reputed to function in the gut as an effective cleanser and anti-parasitic agent. It also seems to slow things down when I'm too loose and to speed things up when I'm too sluggish. I am no expert in this area, but can usually tell when something natural makes sense and actually works.
Anyway, our primary purpose for the order was to help preserve the organic whole grains and legumes we have been stockpiling lately - brown rice, millet, buckwheat, amaranth, oats, aduki beans, chickpeas, lentils, etc. As Paul suggests, we are using thick black garbage bags inside large plastic buckets scaveneged from the local supermarket bakery. Our condo is beginning to look more like a warehouse. My wife knows much more about all of this than I do, so I'll stop talking before risking an error which she will feel inclined to point out.
Regards