Re: Slug repellants - eggshells
I have also heard that coffee grounds deter them but personally I think they are the devil's disciples and nothing will stop them.
Unless you can get a family of hedgehogs to move into the garden. But then you would need to put out dog food for them and the garden would be full of stray dogs. Much noisier than slugs.
BTW......... do you know they have a homing instinct? Slugs, not dogs. I proved this some years back when I took them from the garden and watched the bloody things turn and head right back. So, even if you are lifting them at night, you will need to kill them.
I also saw a neighbours cat in my garden eat one last year. I have no idea why as the poor thing retched as it kept trying to swallow it. I am pretty sure that was not good for it but I was not stopping it. It was one less slug for me.