Diatomaceous earth is the powdered remains of marine invertebrates and is used in the control of internal and external parasites. Diatomaceous earth achieves its effect by coming in contact with the parasite and cutting into their bodies causing them to lose their bodily fluids and die of dehydration.
It is often used for the control of intestinal parasites in livestock and is administered to them as a feed additive or by free choice. It has also been shown to be effective in the control of external parasites such as ticks, fleas, and mites and may reduce the incidence of mange. In such situations diatomaceous earth is often mixed with powdered sulphur and made into a paste using non-GMO containing vegetable shortening and rubbed into the hair or fleece of the animal.
Diatomaceous earth is harmful if inhaled and should be used with caution.
For use in organic systems, only non-heated forms may be used. Also be sure that no synthetic pesticides or synergists are added.
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