Diatomaceous Earth is a very popular organic insect control that is extremely safe for human. It is generally effective against many garden pest and provides good control from slugs. It is also effective on a variety of indoor pests such as fleas and bedbugs. It is the only organic method that I have seen be effective against fire ants. Sprinkle the tops of the ant mounds several times to gain control. Avoid sprinkling your flowers as it can kill bees.
At the PAHL’s HBCG, a metal cheese shaker is used to lightly sprinkle this safe insect control on your plants. A little goes a long way so sprinkle lightly. Repeated applications are more effective than one single application. A common misconception is that the insects exoskeleton is cut by the Diatomaceous Earth. Actually the diatomaceous earth absorbs the waxy protective layer of the insects exoskeleton and the insects shrivel up and die.
Safety for humans
While diatomaceous earth is non-toxic and considered very safe, it is important to be careful and not breath the dust in. Any dust is harmful to your lungs and respiratory system and should be avoided.