... The theory is that they can't find their way back over more than 20m, but even if they can it should take them a while!
I read somewhere they can travel half a mile in a night so you might just be inconveniencing them a tickle!
They might be able to travel that distance but it's the ability to find their way back to where they were that apparently ('apparently') is disrupted. I can't remember where I read it but it sounded convincing. And I guess if they do make it back but it takes them all night, at least they're not eating my courgettes!
Do they have to be the very same slug? Can they be new ones that have lost their way?
location: Surrey Hills, England, ex-woodland acidic sand. "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
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"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."