We recorded 65 dBSPL (dB of sound pressure level) ultrasonic sounds 4 inches (10 cm) from tomato and tobacco plants, implying that these sounds could be detected by some organisms from up to several feet (meters) away.
Did some searching. The paper from 2019 that discussed this -
We recorded 65 dBSPL (dB of sound pressure level) ultrasonic sounds 4 inches (10 cm) from tomato and tobacco plants, implying that these sounds could be detected by some organisms from up to several feet (meters) away.
First time I ever saw a group of Bluejays get loud and constantly cawing... I eventually found that they were following a water snake down the creek and were giving warning calls. Pretty cool.
Did you try others before settling on Pop OS? Is there a largest reason it worked best for you?