Will diatomaceous earth kill roaches?

Step 6: Leave diatomaceous earth applied as long as the cockroach infestation continues. Reapply if the DE gets washed away. Once the cockroaches are gone, you can clean up the diatomaceous earth (click here for cleaning tips), but you can also leave it down as a preventative measure against future infestations. read more

Diatomaceous earth is a fine dust made of diatoms, a form of algae with silicon dioxide shells. In addition to being a safe, organic method for controlling pests, food-grade diatomaceous earth can also be found in skin-care products, pet food and on the shelves of many health food stores as a supplement that's safe for human consumption. read more

In my earlier posts about my roach killing expedition, I mentioned my discovery of Diatomaceous Earth. This non-toxic powder has the ability to kill roaches (and a whole bunch of other things) without poisoning them. It is microscopically abrasive and cuts and scratches the roaches inside and out. read more