Have crawling insects, including bed bugs, roaches and fleas, invaded your home? Safer® Brand offers insect control solutions containing a potent diatomaceous earth formula that can kill crawling bugs within 48 hours! DE is an OMRI Listed® substance consisting of crushed fossilized algae known as diatoms. It kills insects by cutting through their exoskeletons, resulting in a quick death by dehydration. Safer Brand® Diatomaceous Earth is compliant for use in organic production.