| 摘要 |
An elongated base carries two uninsulated electric wires connected to a power source for providing a voltage difference between the wires. The base is placed in any area from which pests, such as rodents or birds, are to be removed. The base may be an electric cable which is to be protected from rodents. Where birds are involved, the base is an elongated perch of insulative material carrying two wires spaced apart by a distance small enough such that the foot of a bird alighting on the perch will touch both wires and be shocked. The perch may be a flexible cord strung between upstanding posts, or it may be a flat strip with both wires on one face of the strip. The perch may be arranged above a receptacle for catching a bird falling from the perch. A mirror may be arranged near the base, and means for reproducing or recording and reproducing bird sounds may be located near the base, for attracting a bird to the base. Electric power may be applied to the wires intermittently and at an adjustable voltage level.
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