Maybe, like The Spiderwick Chronicles, I need a ring of salt around everything. Hehe, I have actually done that around tomato plant containers in the summer. Go onto my patio & you'd think I was trying to ward off evil spirits.Sorry Jaytee I must have totally missed that bit. I'm not sure what else to suggest- does diatomaceous earth work on slugs or is it just hard-bodied critters? Might be worth looking into?
Always puzzled how they get past the salt ring without disturbing it! Do they parachute in?!