Diatomaceous Earth Veterinary Uses

Mined from deposits in Europe and the coastal regions of the United States and Canada, diatomaceous earth (DE) consists of the fossilized remains of diatoms, a kind of prehistoric phytoplankton, or algae. The silicon-rich shells, finely ground, are used in veterinary medicine as a natural flea and mite remedy and dewormer for dogs, cats, horses and farm animals.

  1. Diatomaceous Earth

    • Diatomaceous earth, also known as kieselgur, consists of the microskeletons of ancient phytoplankton, called diatoms. These fossilized shells contain silicon, a natural abrasive. First discovered in Germany in the early 19th century, diatomaceous earth has uses as diverse as swimming pool filtration and toothpaste. Sold in food-grade form, it has been approved by the FDA as a treatment for parasites in both humans and animals, and is widely used by veterinarians as a natural remedy for fleas, mites and worms due to its abrasive qualities.

    Diatomaceous Earth for Fleas

    • When applied to an animal's fur, diatomaceous earth acts as a grinding powder, scrubbing away a flea's exoskeleton. Eventually the diatomaceous earth destroys the flea's respiratory system, killing it. In order to work effectively as a flea remedy, diatomaceous earth must be dry. When inhaled, the dust can cause breathing problems and lung irritation, so veterinarians suggest the use of protective masks for both animals and humans during application.

    Diatomaceous Earth for Mites and Poultry Lice

    • Diatomaceous earth can also eliminate and prevent poultry lice and mites in chickens, ducks and other farm birds. When dusted on feathers or in nesting areas, DE destroys these parasites as it does fleas by grinding their skeletons away and blocking their respiratory systems.

    Diatomaceous Earth for Worms

    • Diatomaceous earth can also be given by mouth to dogs, horses and other farm animals to eliminate intestinal worms. Since these internal parasites lack an exoskeleton, the silicon particles in diatomaceous earth simply grind the worms to death. Not all types of diatomaceous earth is safe for dosing. Some forms of DE intended for purposes such as filtration are chemically treated and toxic. Veterinarians warn that only 100 percent, nontoxic food-grade diatomaceous earth should be used for treating animals with internal and external parasites.