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Originally Posted by Oxford  Coyotes don't like very high frequency noises. . Therefore, as another deterrent, find and use some high frequency sound maker that is beyond human's ability to hear. |
Do you think one of those ultrasonic bug-repellers that don't really repel bugs might emit in a range the coyotes don't like? Perhaps put three or four of them around the yard, each slightly detuned, to get a harmonic going?