Made from fresh water diatomaceous earth, Last Crawl™ Insect DEstroyer Insecticide Powder kills household and garden insects without the addition of any chemical additives. Last Crawl™ Insect DEstroyer Insecticide Powder is a physical insecticide to which insects cannot develop an immunity. It is therefore effective against chemically resistant insect populations. Last Crawl™ Insect DEstroyer Insecticide Powder can be used indoors and outdoors and can be mixed with an attractant such as a cereal or nut powder, icing sugar, powdered soup mixes, or powdered yeast, to attract and encourage the insect to ingest it resulting in a lacerated digestive tract, causing further dehydration. Please see label for further instructions and specific application directions.