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  2. Electronic pest control - Wikipedia

    en.wikipedia.org/wiki/Electronic_pest_control

    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.

  3. Acoustic harassment device - Wikipedia

    en.wikipedia.org/wiki/Acoustic_harassment_device

    These often employ shrill sounding screams broadcast between 12 and 17 kHz. Acoustic deterrent devices normally broadcast near 10 kHz and use high volume. [3] The intensity level of acoustic harassment devices has been measured up to 194 dB re 1uPa @ 1 m and the noise can be audible up to 50 kilometers away. [3]

  4. Animal repellent - Wikipedia

    en.wikipedia.org/wiki/Animal_repellent

    Other repellents are not chemical. A simple electrified or barbed-wire fence can mechanically repel livestock or predator animals. Some electrical repellent systems have been tested against sharks. High-frequency whistles are used on vehicles to drive deer away from highways, and similar devices are used to deter certain types of insects or ...

  5. Bird scarer - Wikipedia

    en.wikipedia.org/wiki/Bird_scarer

    Bird scarers is a blanket term used to describe devices designed for deterring birds by startling, confusing or otherwise repeling them, typically employed in commercial settings by farmers to dissuade birds from consuming and defecating on recently planted arable crops. Numerous bird scarers are also readily available to the public direct to ...

  6. Bird control - Wikipedia

    en.wikipedia.org/wiki/Bird_control

    Bird control devices fall under two categories: deterrents and exclusions. [4] Deterrent devices, such as sonic units and bird spikes, discourage birds from landing or roosting in an area by presenting a physical obstacle or causing discomfort and annoyance for the target bird.

  7. The Mosquito - Wikipedia

    en.wikipedia.org/wiki/The_Mosquito

    The Mosquito or Mosquito alarm is a machine used to deter loitering by emitting sound at high frequency. In some versions, it is intentionally tuned to be heard primarily by younger people. Nicknamed "Mosquito" for the buzzing sound it plays, the device is marketed as a safety and security tool for preventing youths from congregating in ...

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