An all-natural and non-toxic alternative to chemical pesticides, the Last Crawl insecticide powder is OMRI approved with no chemical additives for an eco-friendly solution to controlling pests. It is safe to handle and apply. This natural insecticide works on ants, bedbugs, silverfish, flour beetles, fleas, spiders, slugs, earwigs, centipedes, millipedes, sow bugs, carpet beetles, cockroaches, crickets and caterpillars.