One of the simplest ways to get rid of slugs is to pour them a beer. Literally. Make sure to not waste a yummy and delicious beer on these nasty garden pests though. An inexpensive, cheap beer will do the job just as well as your favorite will.
Bury a small bowl in your garden, near plants that seem to be attracting the slugs. You'll want the lip of the bowl to be level with the soil. Now crack open a beer, and fill the bowl.
Come back in the morning and you'll probably find this! Look at all those nasty slugs! What happens is, they are attracted to the beer, and ultimately drown in it. So there ya go, a cheap and easy solution to slug control.