Connect your smartphone to your car radio via Bluetooth, press the Play button, and turn up the car radio to maximum. It will automatically emit the ultrasonic sound that has been proven to scare 9 out of 10 dogs — helping you avoid potential accidents

It works in a similar way to the preventive safe driving whistle. Although the following app is designed only for dogs, it's definitely worth trying. I’m the same creator who developed the preventive safe driving whistle. (I challenge you — try this on a dog!) Then, go ahead and get the preventive safe driving whistle.

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