For $35-a-month rent, the Electronic Trap Co. of Rochester, N. Y. offers a highly scientific rat eradicator. Taking advantage of the fact that rats fear blind alleys and new paths, the electronic rat trap is a floorless, open-ended box placed over a favorite rat run. The rat, seeing nothing suspicious, thinks he can scoot straight through. But the instant he is inside the trap bang! An electronic eye slams down two doors, one in front and one behind him.
Seeking escape by the only likely-looking "exit," he pops through a little side door. An electric shock tickles his feet. He bolts...