Beer! If you bury a cup in the ground so that the lip is at ground level, you can fill it 1/3 with beer and a tablespoon of flour. This has worked very well for me, a little better than beer alone, and I'm not sure why (maybe I imagine it?). If you would rather not use beer, just use a cup of water and 1 package of yeast. This works well for slugs in the midwest.
BTW, my neighbor was told to use DE as a dust on plants. I don't think it works as well as the beer/yeast trap, but you might wamt to try it if you've some DE laying around.
BTW, my neighbor was told to use DE as a dust on plants. I don't think it works as well as the beer/yeast trap, but you might wamt to try it if you've some DE laying around.