Neither snow, nor rain, nor heat, nor gloom of night poses so painful a threat to the U.S. postman as the common dog. Last year 7,372 mail carriers were bitten by Fido; many more were stayed by a snarl from the swift completion of their appointed rounds. But the postman is about to snap back.
Since 1958, the post office's Safety and Health Division has been experimenting with various deterrents. Candy pacifiers were gratefully chomped by attacking dogs, but after the appetizers disappeared, the mailman still took it on the shin.
Noisome chemicals and tear gas proved as repellent to the...
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