When I received my issue of Organic Gardening today, it contained a good article by Scott Creary…"To combat established populations, try a strategy that also works against slugs and snails: beer. Pour an inch into the bottom of a small dish with it's lip at soil level; pill bugs will crawl in and drown"
I'm sure you can probably read the whole article at Organic Gardening.com. Pill Bug (Armadillidium vulgare)