by Tiffani M. Beckman, Vet Asst. & Student of Veterinary Medicine
Alternatives to Rimadyl | Feeding Naturally
B.A.R.F. | Car Sickness | Diatomaceous Earth
Ear Problems | Fleas & Ticks | Hot Spots
Oils & Essential Fatty Acids | Worming | Dairy Products
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Diatomaceous earth is a common enough substance - found usually in the swimming pool maintenance area of many stores. The DE I am going to be talking about is only to be ingested if it is FOOD GRADE - the swimming pool stuff may be dangerous if eaten.
DE - what is it??
DE is earth that contains the microskeletons of deceased diatoms, which are a type of algae (both fresh water and sea water varieties occur). Diatoms secrete silicon to make a sort of shell for protection. When the diatoms die, their shells fall to the earth and fossilize. People take this earth and grind it very very finely (if it is not already a very fine powder) and use it to clean various things, to keep out invertebrates (insects, worms, etc), and to kill fleas.
How does DE kill fleas?
DE, when applied to the animal's fur, starts a scrubbing action on the hard exoskeletons of fleas (remember fleas have no bones on the inside like we do - they have hard armor on the outside for support and movement). The tiny granules of silicon (think finely ground sand) work in the tiny holes of the flea's respiratory system and in the joints of the fleas. Every time the flea moves or breathes, the silicon grinds away at the exoskeleton, eventually killing the flea through blocking/maiming the respiratory holes or by water loss, as the exoskeleton helps keep in the flea's body water. This works the same way when applied to carpets instead of fur.