Pest and insect ultrasonic sound repellent and removal
The created sound is in a sound frequency that is not detected by the human ear.
It is therefore normal to not hear anything while it is on.
This is why you get an alert notifying you about the status of the tool.
Avoid having your screen closed since the sound will stop.
For now, it is best to use this tool from your computer.
Our app is being developed to let you keep your device from sleeping while the sound is playing.
Frequencies 10 – 100 kHz: pests feel unpleasant and due to intense auditory stress they move away from the device – Source