Many people have been asking what to do about slugs and snails. Normally I suggest cutting back on watering since damp ground encourages slugs and snails. However, there has been more of a problem this year due to all the rain. Iron phosphate slug baits work very well and are not harmful to people, pets, birds, or wildlife. Barriers can also reduce slug and snail damage. Small bits of hair (people or pet hair), crushed eggshells, sharp sand are all unpleasant for them and can protect your plants. Copper sheeting at least 2″ wide can also provide a barrier but usually works best on pots, planters, or raised garden beds. Tending your garden organically allows the natural predators of slugs and snails to help you out. Birds (including ducks and chickens), ground beetles, snakes, lizards, and frogs are some of the natural predators of slugs and snails so help them out by learning how to attract them and only using natural fertilizers and pesticides.
See my Ezine article Organic Slug and Snail Control