AFAIK they don’t. Hedgehogs are crepuscular and nocturnal and are therefore particularly at risk as they are not flight animals. Instead, they curl up and rely on the protection of their spines. This often results in serious cuts or severed limbs, which often lead to death. Another problem is that many robotic mower models do not recognise small animals without touching them first. Contrary to the claims of many manufacturers, scientific studies by the Leibnitz Institute for Zoo and Wildlife Research show that the robotic lawnmowers only stopped and turned off after coming into direct contact with the hedgehogs.

Oh no my lifestyle gets in the way of my ecologically disastrous hobby so I made the hobby even worse by automating it.

If you can’t find the time and motivation to just mow your fucking lawn you shouldn’t have one instead of deploying a fucking hedgehog shredder you lazy removed