PURPOSE: To show an ultrasonic pest controller in action.

DESCRIPTION: (The following is a description from the owner's manual.)

"PEST FREE" is a completely solid state device that emits high intensity ultrasonic sound waves at the frequencies on which most common pests communicate. This device auto matically changes the frequency 60 times per second, assuring complete coverage of all the communication frequencies of most common pests.

The ultrasound acts directly on the auditory and nervous systems of the pests, causing severe pain and discomfort. As a result, the pests vacate the premises to escape the intolerable and painful sound.

The ultrasound is above the range of humans, dogs, cats, and birds, and will not effect plants, TV's, radios, or other electric or electronic devices such as pacemakers, hearing aids, or garage door openers.

SUGGESTIONS: Many knowledgable individuals claim that these devices do not work.

REFERENCES: (PIRA unavailable.)

EQUIPMENT: Ultrasonic motion detector, misrophone with oscilloscope.

SETUP TIME: 5 min.

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