Hmm, Ric beer is actually a drug . . . so you're sedating the slugs before they die, a kind way to go. Here all I caught with my saucers of beer were dozens of drunken roaches. They love the smell of the yeast.
My yard is about as 'natural' and messy as it can be while we can still walk through it. I call it my private botanical garden, but DH describes it as a little nature preserve. Not in a complimentary way . . . he is one of those 'neat appearance preferred' guys.