Pest control is maintained by using traps, predators, parasites, plant extracts, and other naturally occurring material. Prevention means protecting plants by placing them in a uninfested area, or on benches that have a barrier around the legs. Predators can include ducks, geese, chickens, other birds, or even cannibalistic snails. There are a number of traps you can try. One inexpensive plastic bowl with a snap on lid to keep the bait from the weather, is available in local garden shops.
Traps generally rely on a bait that attracts the snails or slugs to the trap.
Often these baits stuns or intoxicates the slugs and snails, entrapping them. One simple trap is a plank or board laid flat on the soil surface. The slugs and snails will hide under it during the day, when you can come along and collect and destroy them. Organic poisons often depend on a trap to bring the critters into contact with the poisons. Alcohol, salt, sulfur and lime have been used.