Single cell organisms, such as bacteria, fungi and protozoa, and viruses, have been mass produced and formulated for use in a manner similar to insecticides. Products containing these organisms are regulated by the Environmental Protection Agency and use is governed by the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). Bacillus thuringiensis The bacterium, Bacillus thuringiensis (B.t.), reproduces by spores. The spores are produced in the bacterium cell along with a crystalline p...
