leave a can of almost finished beer in your yard away from where ever you want to get rid of the slugs. it will atracct them and they will gointo the can and get trapped.
put beer in a tupperwear contaier without the lid and bury it in your garden so the top is level with the dirt, slugs are attracted to it, fall in, get drunk and die
I wish I had slugs I could try this with.... my old roomates would have been good guinea pigs - provided of course that the tupperware of beer was a pool.. hmmm... I would totally go swimming in a pool of beer. I guess I can't blame the slugs for dyin' doing what they love!