2000 - Volume #24, Issue #3, Page #8
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"Bird Gard's" Digital Distress Calls Keep Birds Away
Most electronic bird repellers use loud blasts or high-pitched sounds to scare birds away. This new "Bird Gard" device uses distress calls from the birds themselves to scare off winged pests which are tempted to go where they're not wanted.
Tested by several universities, the unit has been found to be very effect..........


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2000 - Volume #24, Issue #3