Research showed that single treatments applied in spots a few feet apart in beetle-infested soil usually establish the spores. ... ago agricultural specialists stressed a need for large supplies in ready-to-use form to permit field testing to expand. ... and Rodenticide Act. A temporary exemption from the requirements ofa tolerance was granted on about 50 food and feed ... These actions made possible large scale testing by selected growers in continental United States, Hawaii, Puerto Ricoanbsp;...