Amazon has commercial product.

来源: 于 2022-06-13 14:00:21 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

It is said that “Effectively Scares Away Cats, Dogs, Foxes, Birds”

这个东西有674 ratings, they say using ultrasonic(见附图1，top two white round shaped) and PIR methods(见附图1，white round shaped in the middle)  to detect animals:

https://www.amazon.com/ZOVENCHI-Ultrasonic-Repellent-Waterproof-Effectively/dp/B096NCJHBD/ref=sr_1_9?crid=52LJK92GABLH&keywords=pir+animal+detector&qid=1655109466&sprefix=pir+animal+%2Caps%2C53&sr=8-9

The following is the same thing. It is said that Abilly 2022 Solar Ultrasonic in Repellent Defender Rat, Squirrel, Deer, Raccoon, Skunk, Rabbit, Mole, Dog, Cat, Waterproof with Motion Detector Gree

https://www.amazon.com/Abilly-Ultrasonic-Repellent-Defender-Waterproof/dp/B09ST8ZWS8/ref=sr_1_15?crid=2OF3P85774SH&keywords=garden+ultrasonic+pir+sensor+solar+animal+dispeller&qid=1655153139&sprefix=PIR+animal%2Caps%2C124&sr=8-15

There is a movie piece from the above webpage: https://www.amazon.com/vdp/028f7a7e7ed048289f0b928c90de35f2?ref=dp_vse_rvc_0

 

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