Articles needing additional references from April All articles needing additional references. A cat repeller is a device or substance used to discourage cats from entering an area, or to encourage them to leave if they do enter. Cat deterrent sensor Learn how and when to remove this template message. Although lion dung is supported by the British organisation Cats Protection to be effective in deterring cats, an episode of MythBusters found it completely ineffective as a cat deterrent sensor repellent. There are also reports that the devices take a while to become effective, as some cats will stand their ground in a futile cat deterrent sensor to make the deterrent go away. A variety of commercially produced electric fences are also available, with voltages low enough to deter but not cause harm to cats. Professor Timothy Leighton  from the Institute of Sound and Vibration Research, cat deterrent sensor has expressed concern about the recent growth in commercial products which exploit the discomforting effects of in-air ultrasound.
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These laser-aiming devices can be targeted at cats and activated by a trigger. Unsourced material may be challenged and removed.
Cat repeller - Wikipedia
Unsourced material may be challenged and removed. Scatter guns are another form of ultrasonic device.
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Professor Timothy Leighton  from the Institute of Sound and Vibration Research,  has expressed concern about the recent growth in commercial products which exploit the discomforting effects of in-air ultrasound. These repellents give off a smell that is very unpleasant to the cat, causing it to avoid that place. Applied Animal Behaviour Science.
These devices are usually combined with a motion sensor which is triggered by movement within the sensors range. Retrieved 19 November Please help improve this article by adding citations to reliable sources. Some cats are immune to ultrasonic cat deterrents, mainly the ones which are hard of hearing. They will send out an ultrasonic noise directed where aimed. Unsourced material may be challenged and removed. Retrieved from " https:
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Royal Society for the Protection of Birds.
Catwatch Cat Repellent - RSPB Approved£ 40 sq ft Ultrasonic Cat Repeller with PIR Motion Sensor - Wide Coverage by Defenders™£ PestBye®. Currently, the best cat repellent is the Wikoo Ultrasonic. When its motion sensor detects a critter, the stream opens. Sprayer is fully adjustable. Results 1 - 10 of 10 There are even products with sensors, so your kitty's motion can activate the cat repellent spray, even if you aren't there to witness their bad.