Safer, 4 LB, Ant & Crawling Insect Killer, Utilizes Diatomaceous Earth, Silicon Dioxide & A Powerful Bait Formula That Kills Insects 2 Different Ways, By Ingestion &/Or Dehydration Within 48 Hours, Works Indoors & Outdoors When Kept Dry, Ideal As A Bed Bug Killer Or For Killing Ants, Earwigs, Cockroaches, Silverfish, Crickets, Fleas, Millipedes & Centipedes, OMRI Listed Seal As Well As The USDA National Organic Program Compliant For Use In Organic Gardening Seal, Certifying This Product Is Organic, Diatomaceous Earth Is A Dust Like Product That Contains The Crushed Fossilized Remains Of Diatoms & Dust Is Ingested By The Bed Bug Or Other Crawling Insect, Or As The Insect Crosses Through The Powder & Cuts Their Exoskeleton, Causing Them To Dehydrate & Die, Resealable Bag.