There is no longer any reason why a farmer or a community of farmers should allow their crops and meadows to be destroyed by swarms of grasshoppers. Our knowledge of their habits has increased and better methods of destruction are known, so that at the present time the grasshopper takes its place in the list of crop pests that can be controlled by those who desire to do so. In the old days when countless numbers of the Rocky Mountain locusts (M. spretus) settled down on the crops of the few scattering settlers of the plains or Intermountain region, there was rarely any possibility of successfully coping with them. The grasshoppers were too numerous and the settlers too few. The breeding grounds were hundreds of miles away and almost unknown. Grasshoppers were at that time rightfully considered a public calamity against which no provision could be made.
Ball, E. D., "Bulletin No. 138 - How to Control the Grasshoppers" (1915). UAES Bulletins. Paper 89.