Can I Use Diatomaceous Earth on Cockroaches?

Diatomaceous earth is a natural pesticide that can be used indoors or outdoors. It is a non-toxic material that can be easily applied with a duster or with a broom. It should be applied in dry form and should be left to dry before application.

Before applying diatomaceous earth, it is vital to clean the house. This includes cleaning behind appliances and under furniture. A clean and clear environment will increase the effectiveness of the powder. In addition, diatomaceous earth works best when there is a low humidity level in the house. If humidity levels are too high, use a dehumidifier. Dusting the wall void between sheetrock and the box frame is also recommended.

Diatomaceous earth is highly absorbent, and it continues to absorb moisture if the surrounding environment is humid. The moisture will reduce the DE particles’ ability to absorb fats from the cockroach exoskeleton. It also reduces the sharp edges of the microscopic particles.

While diatomaceous earth is non-toxic, it will not kill cockroaches immediately. It will take time to eliminate a long-term infestation. While it is a good option, be patient. The roaches will not die immediately, and you will need to continue using the product for a few days.