I need a few snails. Every now and again. Have a lizard, and the *only* thing it will eat are snails! Loves 'em! Anyway, I go out in the morning after rain, but they have already disappeared (the speedy little buggas! Lol). How I can attract them? I can' remember what attracts them, aside from planting veges, and can't do that at the moment... Also, I don't want to kill them.