Ultrasound repellers could keep hedgehogs off roads, scientists hope | Study shows animals hear very high frequencies, making it possible to design a deterrent to cut deaths

Ultrasound repellers could keep hedgehogs off roads, scientists hope | Study shows animals hear very high frequencies, making it possible to design a deterrent to cut deaths

https://www.theguardian.com/environment/2026/mar/11/ultrasound-repellers-hedgehogs-roads-scientists

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