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Camouflage for Mice in Earlville Review (Earlville IA) November 28, 1929, p. 9—
Camouflage, which helped to win the World War, is being employed in Europe to catch mice. On the theory that rodents of today know their traps, inventors have produced, for use In office desks, a mouse-catcher shaped like a harmless paper clip. Another, for general use, resembles an old tin can whose top closes suddenly. Still another resets itself automatically to catch mice all night and dump them into a vat of water.
