Slugs and snails are terrestrial mollusks, not insects. Being hermaphrodites, they do not need to mate at all in order to lay viable eggs. (Some research indicates that they usually do mate with another snail, however, even though it isn't necessary.) A single brown garden snail can produce over 400 more snails every year.
I've not heard of using juice as a bait, but certainly beer is effective. Perhaps wine would work, too, but all I've ever heard about for this use is beer. Snails in my yard don't seem to care for the stuff, but the slugs love it. If you were hoping to spare the lives of the critters by using this method, I have to tell you that won't happen. They get drunk on the beer and drown in it. [img]https://i252.photobucket.com/albums/hh27/Kisal_photos/dunno.gif[/img]
A trap can be made out of anything that will lay flat on the ground, such as scraps of wood, or even cardboard. You'd probably have to weight the cardboard down, so it doesn't blow away if there's a wind. Just pick up the traps the next day and collect the snails and slugs. They will be alive, so you'll have to either destroy them, or take them far, far away from your property. They can travel about a yard/meter in 5 minutes, and the Brown Garden snail does
have a homing instinct. If you don't take them far enough away, they'll just head right back to your property. IMO, they should be destroyed, rather than risk releasing them in an area they haven't yet infested.
Ducks will happily eat both snails and slugs.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams