However, it is impossible to eliminate all of the damage with irrigation management. Hand removal and disposal is not extremely effective unless you work at it often, but it offers a considerable degree of personal satisfaction for people seeking revenge on the snails who destroyed their plants. Be certain to kill them rather than just relocating them elsewhere in your landscape or moving them to some other landscape. Heavy irrigation of the area with snails will often flush them out and onto walls and plants where they may more easily be collected. Trapping is a commonly described method which takes into account the fact that snails are attracted to beer.
Beer is used as a bait and killing agent.
In trapping snails, small bowls of beer are placed in the landscape, especially where snail populations and snail damage is high. The snails will crawl into the bowl and die. Different things are said about the best type of beer. Some people say that only stale beer works, others prefer fresh beer, and some have found non-alcoholic beer to be most effective. If you wish to use the beer traps, you may want to experiment to see which works best for you.