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Ultrasonic devices are static sound-emitting bird deterrents, which, in theory, will annoy birds to keep them away from enclosed or semi-enclosed areas. Ultrasonic scarers are not harmful to birds, however, there is debate around birds' ability to hear these frequencies at loud enough decibels.
Acoustic harassment and acoustic deterrents are technologies used to keep animals [1] and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from aquaculture facilities and to keep birds away from certain areas (for instance in the vicinity of airports and blueberry fields).
There are also ultrasonic avian deterrents, which are inaudible to human ears. [2] Ultrasonic bird repeller, 2008. In 2013, Dr. John Swaddle and Dr. Mark Hinders at the College of William and Mary created a new method of deterring birds and other animals using benign sounds projected by conventional and directional (parametric) speakers. [8]
Electronic pest control is the name given to any of several types of electrically powered devices designed to repel or eliminate pests, usually rodents or insects. Since these devices are not regulated under the Federal Insecticide, Fungicide, and Rodenticide Act in the United States, the EPA does not require the same kind of efficacy testing that it does for chemical pesticides.
Results from the study indicated that the device did have a moderate deterrent effect, reducing the probability of a previous cat intrusion into a garden by approximately 32% in the first experiment, but not in the longer running second experiment. [6] Scatter guns are another form of ultrasonic device. These laser-aiming devices can be ...
A shishi-odoshi breaks the quietness of a Japanese garden with the sound of a bamboo rocker arm hitting a rock.. Shishi-odoshi (literally, "deer-frightening" or "boar-frightening"), in a wide sense, refers to Japanese devices made to frighten away animals that pose a threat to agriculture, including kakashi (), naruko (clappers) and sōzu.
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