I have not tried this myself but have seen it in a number of other forums. You put a small amount of beer in a low lipped dish -maybe something like a jar lid - slugs and snails are attracted, possibly by the yeast, and will crawl in but cannot crawl back out. You have to dump out the container and its contents every day and refill for the next night, but it is definitely organic. You place as many of the little dishes around the garden as you need. You can use bigger dishes by digging it into the ground so the lip will be less than an inch above ground level.
Larry
