This organic pest control formula is ideal for killing ants, earwigs, cockroaches, silverfish, crickets, millipedes and centipedes. This ant and crawling insect killer utilizes diatomaceous earth (AKA silicon dioxide) which includes a bait formula that kills insects by ingestion/dehydration within 48 hours. Works indoors and outdoors when kept dry. OMRI-listed and compliant for use in organic gardening.