Is it possible to get rid of Slugs and Snails Permanently?
No!
Even if we managed to control our slugs and snails in our own yards, it will just leave more room for the neighbor's slugs and snails to move on over.
I too have tried everything from beer traps to slug bait.
I've gone back to just using organic slug bait, if they eat more than their share.
I also hunt for them after a rain, early morning and before dark with a bottle of a homemade concoction.
I use a spray bottle 3/4 filled with water, few drops of liquid soap and 1/4 cup of ammonium.
Then I just squirt the chlorophyll suckers whenever I find them.
Years ago when we moved to this house, I couldn't grow anything.
First I stopped buying annual flowers and then tolerated my Hostas to the end of the summer and then cut them all back. They looked sick and full of holes.
Now I have beautiful Hostas until the first frost.
What did I do to get rid of slugs and snails?
I know I couldn't get rid of my neighbor's slugs and snails, so I concentrated on fixing my yard.
I have clay soil, so I brought in a whole bunch of "grit" ( coarse sand ) and forked it all in my flower beds. I wanted to mulch my garden paths and then I thought that my neighbors slugs and snails would all move in too. So laid "pea gravel" instead.
Then I noticed that my Hostas were beautiful again and I couldn't find any slug or snail damage.
I do encourage the residence Toad to bring in their relatives.
Sometimes I do see a few snails, but I haven't seen any slugs.