Diatomaceous earth is an effective method of scorpion control, according to azfamily.com. The substance, which is available at various retailers, is effective when it is dry and may lose its insecticidal properties if exposed to humidity.
Diatomaceous earth is a natural substance that works well as a pesticide, according to the University of Florida. As a commercial product, it typically comes in the form of a powder, although it can also be purchased as a liquid. In addition to keeping scorpion populations in check, it also helps eliminate fleas, ticks and cockroaches. The product works by penetrating the body of the pest. The penetration causes dehydration, which leads to death within a short time.