Sonic Defender!

The Sonic defender is universal and popular tool. Its include repellent, flash light and dog whistle in one. - Presets for Mosquito, Dog, Rat, annoying young people - You can manually tune frequencies 15-24000 Hz - Tested on many of insects- Tested on some spiders- Flashlight, you can use a light and tone generator at the same time.- The app store your adjustments for each mode.- The app draw signal graph on screen to help you understand current mode.