Yesterday I went through my garden and removed the first slugs of the year from my tomatoes. The same question as every time: What to do with them?
Throwing them into a bucket of water is no good; wait five minutes and they are out. The beer-trap will just attract more of them and if it's raining it will be rendered down to being useless.
So I used baking soda (~15g in 1/8l) and it seems they're still on the bottom of the bucket.
Today first thing in the morning was to remove the slugs which came during the night. Curious if they would survive in that baking-soda water I dropped them into it and... seems they died.
From my knowledge baking soda and water will create a weak organic acid. If baking soda is applied on slugs directly it will apparently dehydrate the slug. (Correct me if I'm wrong)
So how does a night-old bucket of water with a reasonable amount of baking-soda affect slugs?
Edit one: Apparently Baking Soda causes a reaction which creates Carbonic Acid inside the slug. Just. How? Source.