Bill Keen wrote:

> Terry, Check your facts.  There are no crystals in DE.  It is a
> naturally occurring calceous product of organic origin and is not
> processed.
> No, DE contains crystalline silica. If it didn't then it would not
> work, it is the source of the sharp crystals that kill the parasites.
>  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?
>
> That information is available many places.  For instance the page from
> Walton feeds: http://waltonfeed.com/grain/faqs/ive.html
>
> IMPORTANT NOTE: There are actually two kinds of diatomaceous earth to
> be found on the market and only one of them is suitable for use as an
> insecticide to use in your stored grains. The kind that you DO NOT
> WANT FOR FOOD USE is the type sold by swimming pool suppliers as a
> filtering agent. DE to be used for filtering has been subjected to a
> heat treatment that dramatically increases it's crystalline silicate
> content and makes it unsuitable for use with your foodstuffs. The
> diatomaceous earth that is needed for use in food storage has not been
> heat treated and has a crystalline silica content of no more than
> 1-1.5%. It is commonly sold in hardware and garden stores as an
> "organic pesticide" and is available from a number of storage food
> dealers. A number of these suppliers are listed in the Resources
> section.
>
> and
>
> Good afternoon all. Diatomaceous earth is approved by the USDA as an
> animal feed additive, however I have found out that there are vast
> differences between various forms of diatomaceous earth. Some DE
> products may not be effective in controlling insects, while others may
> be harmful to humans and pets. The most important differences between
> individual forms of DE is the shape of the diatom, content of
> Crystalline Silica, and the purity of the Silica Dioxide. The World
> Health Organization cautions that DE with a crystalline silica content
> of three percent or higher is dangerous to humans, (and probably pets
> and birds as well). Diatomaceous Earth used in swimming pool filters
> has close to a 60% crystalline silica content. I know of a product
> called Organic Solutions (insecticide) which is approved by both the
> EPA and USDA and has a crystalline silica content ranging between
> 0.36% to 1.12% according to its labels etc. It is classified as
> Amorphous Fresh Water Diatomaceous Earth (whatever that means).
> However, all literature I have read assures it is safe for both humans
> and animals and seems to be very effective at killing insects. I have
> never found 'Food Grade' and therefore never used it.  A natural
> substance, ground up and bagged, had no serious contaminants.
> That is all I buy, it is available on many sites on the net, and at
> feed stores.  Check
> http://www.gardenharvestsupply.com/de_permaguard.aspx
> http://www.dirtworks.net/DiatomaceousEarth.html
>
> ttp://www.herbalremedies.com/diatomaceous.html?source=google&engine=adwords!32&keyword=%28diatomaceous+earth+food+grade%29&match_type=
>
> http://www.diatomaceous-earth.net/
>  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.
>
> No, it means that it has not been heat processed, which destroys it's
> abilities to kill parasites.  Heat treating improves it's filtering
> capability for swimming pool filters, but destroys it's ability to cut
> up the parasites.  It is not a scam, just the judicial choice of using
> the proper tool for the appropriate job. 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.
>
> I am confused, you say you have never used the pool filter variety,
> and have never seen the food grade stuff above. But then you say that
> you compared food grade stuff from the feed store with the pool filter
> variety.  Which is it, have you seen it or not? Plus if you don't use
> the pool filter variety nor the food grade variety from the feed
> store, then just what is it that you do use?
>
> Also how did you check them?  What power microscope did you use? Can
> you post pictures?  There is no gurantee that the pool stuff you
> checked has been heat treated, but since it can be, it is a gamble to
> use it.  Checking the label would of course be useless, since they do
> not label any heat treatment it may have received.
>
>  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.
>
> I don't think the problem is that it has clumps.  It must not be heat
> treated which causes the sharp points on the silica crystals to
> crumble and become ineffective or causes the amorphous silica to form
> crystals increasing the amount to be above the safe level depending on
> the level of heat and the time it is applied.  However there may be
> some clumping, once again I would need to know what power microscope
> was used to determine if there was any clumping of the diatoms since
> it would be impossible to tell by the naked eye.
>
> Marshall
>
>
>
>   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.
>