Diatomaceous Earth works by piercing the exoskeleton of insects. The diatoms, or phytoplankton, that make up DE have tiny, strong shells made of silica, one of the hardest natural substances on Earth. The sharp edges of the silica cause hundreds of abrasions on insects with exoskeletons, causing irreparable damage. Once the insects’ exoskeletons are pierced, they dry out and pass away.

Harris Diatomaceous Earth (DE) Food Grade is 100% freshwater DE that has been ground up with no additional additives.

  • OMRI listed with the Organic Minerals Research Institute - a non-profit organization that reviews products against organic standards.

  • Free of chemicals and safe to use around children and pets when used according to the product label instructions.
  • Bag includes a complementary powder duster for easy application.

  • Multitude of applications! We encourage you to discover all of the ways to use DE.