02-08-2012, 06:03 PM
I've been using the iron phosphate bait and it works extremely well. I was expecting it to be a lot less effective than the toxic stuff, but it wiped out all the slugs around my plants within a couple of days with one application, and they haven't returned. I put a little more out a few months ago when it looked like there was some feeding damage, but never actually saw any sign of them. Iron isn't a metal you need to worry about building up too much of in the soil (there's lots of it anyway), and the phosphate part turns into fertilizer when it breaks down.