riddance depends on systematic efforts by communities, States, and the 
Nation, as well as cooperation between Nations. | 
In the course of its work on rats the Biclogical survey has devel-— 
oped the "Campaign method" in many places and in various phases. Most 
important. has been the educational emphasis, that' is, focusing the atten— 
tion of the public upon the need for rat control und: demonstrating the pos- 
sibility of cooperative cantrol by ratproofing,; destruction, and sanitation. 
Though supervised by the Survey, these campaigns have not been financed by 
the Federal Government, except. some of the more recent of the emergency 
eee under C.W.A., E.R.A., and W.p.A. funds. There have been county-wide 
ral campaigns, State-wide campaigns, end city campaigns, and many comm- 
ne undertakings. Millions of the Bae have been killed at re ‘atively 
low cost, and the public has been aWakened to the rat menace. Requests dy 
individuals and by organizations Mdtine civic and sovernmenta id angioma opegmetovaricvaciopl 
through campaigns have been oes sing. 
scale 
Ultimate solution of the rat-control problem awaits a definite large— 
plan of cooperation between individuals, organizations eae man-— 
ufacturers and exterminators), municipnlities, counties, States, and th 
Federal Government. Adequate legislation and funds are essential to com 
pulsory and regulatory features, but progress will depend to a great extent 
upon voluntary cooperation. 
-6= 
