We have the same problem. We live north of Seattle; there are about a bazillion slugs per square inch here.
One thing you can do is make a line of diatomous earth (spelling?) around the borders of your beds - they don't like to crawl over the line because the sharp edges of the particles will cut them.
We take empty coffee cans and bury them to their tops in the soil, then fill the cans with beer. Every morning we find an incredible number of dead slugs in the cans. Its gross to dispose of them. But they like the beer a lot better than the plants.
One thing you can do is make a line of diatomous earth (spelling?) around the borders of your beds - they don't like to crawl over the line because the sharp edges of the particles will cut them.
We take empty coffee cans and bury them to their tops in the soil, then fill the cans with beer. Every morning we find an incredible number of dead slugs in the cans. Its gross to dispose of them. But they like the beer a lot better than the plants.