RNA interference works in the cytoplasm of the cell; thus it does not genetically modify the organism. It can block an organism's production of an essential protein, suppress or modify various genetic traits without changing the genetic make-up of the organism. It has been well known that long dsRNA (~200-800 bp) can initiate RNAi in plant, worms, insect, and even shrimp. Thus, dsRNA has been studied and may be a new raw material for herbicide, insecticide, anti-fungal and anti-viral applications for agricultural as well as environmental applications. Because of its sequence specificity, it can also be designed to have no toxicity to unintended organisms.