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As documented by an individual on youtube.com a man in Italy has constructed some experimental Dog Control Sound Cannons. The youtube video provider narrates an analysis of the devices including potential problems with their design. This provides a good starting point for the construction of a better mouse trap. [[File:nobarksoundcannon.jpg]] According to the video, the Italian developer of the cannon noted the ineffectiveness at ultrasonic frequencies, however, determined it to be highly effective at high sonic frequencies. Apparently, the dogs whimpered, and tried hiding behind objects. The video narrator suggests that with modification by selecting equipment that would be efficient in the ultrasonic range the same results could be achieved using sound a human could not hear, which is the goal.