No - you put it in a shallow dish, like the ones you put under flower pots. Obviously, a clay one won't work unless it's glazed. Make a little depression in the soil so the rim of the dish is almost level with the ground. Not sure if they have a preference for certain kinds of beer. :-)
Another option is to capture them alive, put them in a box with some moist oatmeal, let them eat for a few days, and then sautee them with garlic, butter and herbs. Escargot! The oatmeal flushes anything nasty out of their digestive system. Even though people eat salami, cheez doodles and other crap, we wouldn't want to eat anything that ate as badly as we do.