Diatomaceous Earth - An Overview

What is Diatomaceous Earth?

Diatomaceous Earth (DE) is defined by Merriam-Webster

a light friable siliceous material derived chiefly from diatom remains and used especially as a filter

In simpler terms, DE is a powdery white chalky substance made up of fossilized tiny shell/exoskeletons of microalgae found in the earth from way-back-times. DE is primarily made up of silica (80-90%) with a bit of alumina and iron mineral.

Uses

Diatomaceous earth is a natural insecticide. It mechanically strips oils/moisture when it contacts an insect, it damages the exoskeleton due to its sharp edges and ultimately dehydrates insects. It has be used in structures and on livestock.

Diatomaceous earth is a natural absorbent/deodorizer.

Diatomaceous earth, added to some water, can be utilized as an abrasive polishing paste.

Diatomaceous earth has been used in fine water filtration applications.

Considerations

There is a difference between food grade and non-food grade Diatomaceous Earth. Food grade contains low levels of crystalline silica while non-food grade can have high levels. Crystalline silica is dangerous to breath in/handle without proper protective equipment.

Diatomaceous earth is a mined finite substance.

Diatomaceous earth loses its insecticide properties if wetted. Only dry DE is effective.

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This is good information, I have considered this (DE) to spread around our house foundation at the farm. The boxelder bugs the last few years are incredible, sounds like rain would render it ineffective. I have been using dish soap and water mixed in my backpack sprayer and this does them in. I am all for bugs and the natural ecosystem but one can only put up with so many bugs in the house. The boxelder bugs seem to have no natural predators here that I can see, at least not in any number.