Not only that but the chrystalline silica content is too high.  FDA  has 
determined that greater than 3% is harmful.  
Many places on the web sell food grade de that is certified less than 1%...

Go here:

http://www.google.com/search?q=food+grade+diatomaceous+earth+silica+content&btnG=Google+Search

Regards,
George Martin

On Wed, 25 Jul 2001 20:05:11 -0400, Marshall Dudley wrote:

=>do not use the swimming pool type, it is heated and turns a harmless
=>substance into a harmful one.
=>
=>Marshall
=>
=>ejohns9...@aol.com wrote:
=>
=>> In a message dated 07/25/2001 3:34:30 PM Central Daylight Time,
=>> cking...@nycap.rr.com writes:
=>>
=>>
=>>
=>>> DE is used in swimming pool filters as well as gardening. Thse
=>>> centers should
=>>> have it available.
=>>> Capsule and capsule fillers are available at VRP and
=>>> beyond-a-century, both
=>>> on
=>>> the web.
=>>
=>> ________________
=>>
=>> All DEs are not created equal.  The swimming pool kind is not food
=>> grade.
=>> We use the kind we dust our stored beans in on our animals.
=>>
=>> Edith
=>
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