Well, I have spent a small fortune on commercial snail bait, *sigh*, but they just keep comin’. Also have to be careful with the dogs that they don’t get into it, so it is a constant problem. One year I planted marigolds and woke up the next morning to find perfect marigold stems and leaves without one single flower on top. They’d all been eaten off overnight by an army of snails. Grrrrrrrr.
Yes, snails are the biggest challenge in my garden. :-(
I have no idea what your garden is like, how much you’ve tried, and what the labor entails, but have you tried beer?