All natural ant, flea & tick control. Made from diatomaceous earth, which is fossilized remains of diatoms, a type of hard-shell algae. Insects cannot become immune and will die within 48 hours from dehydration. Can be used indoors and outdoors around foundation of home, basement windos, along floors next to walls, and corners and crevices inside, and around the base of plants. Controls ants, fleas, ticks, cockroaches, earwigs, slugs, beetles, spiders and silverfish. Does not harm people, pets, or plants.