Doktor Doom Baited Insecticide DiatomaceousA combination of two food grade additives, one of which attracts the insects while the other is a digestive ingredient. This formulation usually kills crawling insects within 48 hours from internal and external abrasive action. This fine powder is odor free, does not discolor and is not harmful to animals, fish, fowl or food, when used as directed. The product is effective as long as it is present and can be used indoors or outdoors.