I have slugs. Gobs and gobs of slugs. I have hand picked, set up boards, bought them beer and I might as well own stock in Sluggo. Sluggo works for a few days, then another wave moves in and the slugs waiting in reserve are limitless. My garden is littered with empty snail shells left by the fallen, but I might as well try to hold back the ocean with a broom.
So I've been looking at longer term measures, specifically barrier methods. The critical stuff -- that is, the vegetable seedlings -- are mostly in raised beds, which is the good news, Bad news is: boy do I have a lot of them. I'm looking at either banding all my beds in copper tape or sandpaper. I rather doubt the sandpaper will last and it will take a lot longer to cut strips and tack it up, but it's cheap. Copper tape... eek. I'm lazy: I prefer to do things once and be done at least for a few years, so I do things the right way. Still... unless I find a much cheaper source of copper tape I am looking at a cost of well over a year's worth of vegetables.
Can anyone comment on the long term effectiveness of either method?