Diatomaceous Earth & Roaches

Diatomaceous earth is a natural way to kill roaches and other insects, including ants, termites and fleas. Diatomaceous earth is non-toxic to humans and animals and keeps working long after you apply it.

Features

Diatomaceous earth is a chalk-like mineral formed from the fossils of single-celled, aquatic organisms called diatoms.

Function

A cockroach dies when exposed to diatomaceous earth because the mineral pierces through the body's protective covering, leading to fatal dehydration.

Types

Diatomaceous earth products usually come in the form of dusts or powders. You can apply diatomaceous earth alone or use a product that combines it with other insecticides, including pyrethrins.

Use

Apply a light dusting of diatomaceous earth anywhere roaches hide. These spots include inside wall cavities along baseboards and in cracks and crevices. Make sure the areas are dry.

Benefits

Insecticide dusts made with diatomaceous earth tend to be less toxic to humans, pets and the environment than liquid insecticide and pesticide products, according to Washington State University's Spokane County Extension.

Warning

If you are using diatomaceous earth products to kill cockroaches, take the same precautions you would with any insecticide. Gloves, eye protection and a face mask protect you from exposure to dust particles.

References

• Washington State University: Pesticidal Dusts
• Texas Agricultural Extension Service: Cockroaches Recognition and Control
• Encyclopedia Britannica: Diatomaceous Earth

Resources

• Unl.edu: Least Toxic Cockroach Control