In the end though, history will see it as a half measure where they really shouldn't have half assed it. It only took one moron to defund the project and all of it will come streaming back.
Hmm, that seems to contradict the article directly - insecticides were used to try to battle screwworm initially and were not really effective - the solution was using sterile male flies to stop reproduction - which would work in South America just as well as it did in North (with sufficient scale)