coffee for snails - Try wood ash
 

I have been using wood ashes from my fireplace in lines 6" from young plants
(such as cuke transplants & just sprouted beans etc). I use a trowl to place
a 1" wide by 1/4" thick layer and have had virtually no slug damage. It's
simple, easy, cheap and something that the garden needs. Works for me.

coffee for snails - Try wood ash
 

I had similar result with wood ash, but my delivery system was an old coffee
can that I drilled some 1/4" holes in one side, and sort of sift it around the
area. I don't know what it is, but the snails and slugs really seem to hate
that stuff.

coffee for snails - Try wood ash