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  2. Acoustic harassment device - Wikipedia

    en.wikipedia.org/wiki/Acoustic_harassment_device

    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).

  3. Bird control - Wikipedia

    en.wikipedia.org/wiki/Bird_control

    Sounds include predator cries and distress calls of a variety of birds to discourage pest birds from coming into an area. Common locations for these devices include vineyards, reclamation plants, airports, and other open areas. There are also ultrasonic avian deterrents, which are inaudible to human ears. [2] Ultrasonic bird repeller, 2008

  4. 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 ...

  5. Animal repellent - Wikipedia

    en.wikipedia.org/wiki/Animal_repellent

    Scarecrow in a field Rat guards: steel or aluminum discs attached to the mooring line to prevent rats from boarding a ship Ultrasonic bird repeller. An animal repellent consists of any object or method made with the intention of keeping animals away from personal items as well as food, plants or yourself.

  6. The 7 Best Wireless Surround Sound Systems for an Immersive ...

    www.aol.com/lifestyle/best-wireless-surround...

    What to Consider 5.1 or more? The traditional surround-sound specification calls for five full-range speakers: one center channel, left and right up front, plus left and right speakers mounted on ...

  7. Cat repeller - Wikipedia

    en.wikipedia.org/wiki/Cat_repeller

    A statistical survey into customer satisfaction levels with ultrasonic deterrents concluded that 80% of owners expressed satisfaction with the results of ultrasonic deterrent devices. [ 3 ] The Royal Society for the Protection of Birds (RSPB), has endorsed a commercial product called "CatWATCH", [ 4 ] for which it receives 2% of the wholesale ...

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