INSECTIGONE® CRAWLING INSECT KILLER is made from a unique patented formula containing amorphous diatomaceous earth, known as silicon dioxide, and an attractant. This odorless and non-staining powder can be used without fear of damage to pets, fish, birds or wildlife. Remains effective in the control of ants for as long as INSECTIGONE® is present. If the area where the Diatomaceous Earth is applied becomes wet, it will need to be reapplied. Insectigone® Crawling Insect Killer formula kills insects by ingestion/dehydration within 48 hours. An advantage to using diatomaceous earth is that insects cannot develop a resistance to it since there are no chemicals to which they can build up immunity.