Terry, Check your facts. There are no crystals in DE. It is a naturally occurring calceous product of organic origin and is not processed. Just where did you get the info that you are supporting? Have you done ANY research for yourself or have you just listened to the nonsense some self-proclaimed 'experts' have given you? I have never found 'Food Grade' and therefore never used it. A natural substance, ground up and bagged, had no serious contaminants. You appear to be a 'sheeple' who believes that the Feds have all the answers to your problems. That is what "food grade' really is - a federal scam. I have never paid the exhorbitant sums they ask for the pool filter DE but I have checked the bags/boxes and they are the same as the feed store variety. Those that have used the pool filter source have reported that there were no clumps or anything else different from what I showed them in my bag. Bill Keen
Terry Chamberlin <[email protected]> wrote: > The easiest and cheapest for people and pets to get rid of > intestinal worms is DE (diatomaceous earth) available at the > local feed store or pool supply (much higher priced there). This is quite important: You should only use FOOD GRADE diatomaceous earth, not the stuff used in pools. The packaging must say FOOD GRADE. The pool stuff has been heated too much in processing, and it has melted the crystals into chunks that should not be ingested. Nurseries carry it, and sometimes feed stores.

