Amazon has commercial product.

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

這個東西有674 ratings, they say using ultrasonic(見附圖1，top two white round shaped) and PIR methods(見附圖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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