Folks over on GardenWeb have been talking about caffeine as a slug repellent. There's been some debate about how to apply it (spraying plants with coffee, used coffee grounds vs new), but I'm giving my own experiment a try.
My cabbage is getting eaten, despite all the hand picking and sluggo I put out. So after saving up a can's worth of spent coffee grounds, I picked off the eaten leaves of two of them and surrounded them with a thick solid layer of grounds:
I seriously hope this works, as I'm not finding much else that does. The slugs in my yard are tiny--the size of a grain of rice--so they're hard to get a handle on. They also aren't to deterred by Sluggo.
If nothing else, I'm giving these couple plants an extra shot of nitrogen, and with brassicas being heavy feeders, that's a bonus.
I'm guessing I should know in a few days and will keep you posted!