Hello Roger
Welcome to the group and I hope you find useful information here.
The spray labels itself as friendly to pets and wildlife, but I would always take that with a huge dose of salts as it’s designed to eradicate part of our wildlife
Hedgehogs are natural pest controllers in our garden, eating as many insects as they can and they will also eat carrion – ie your dead beetles so personally I wouldn’t want to recommend use of this. I’ve put a link below that explains use of chemicals really well and I hope you find it helpful
https://www.gracethehedgehog.co.uk/habitat-loss-and-farming/
