"A DDT TALE AIDS REDS IN VIETNAM"

By Homer Bigart Special To the New York Times.

"QUANGNGAI, Vietnam, Jan. 31, 1962 --American DDT spray killed the cats that ate the rats that devoured the crops that were the main props against Communist agitation in the central lowlands. The result: the hungry, embittered rural population is tending to support the Communist insurgents."

https://www.nytimes.com/1962/02/02/archives/a-ddt-tale-aids-reds-in-vietnam-crop-loss-laid-to-rats-after-spray.html