I have put copper jewelry wire all my Brugmansia. Cheap on Ebay...so far so good., It's only been a couple of days, but I was going out every night then again before dawn. I'll give it a week and if no snails ALL my pots will get a copper necklace with wire. My mother puts copper tubes about 8" tall driven into ground like a spike in between all her roses. We both use coffee grinds in our soil mix,.along with other trash, coir fiber and cow manure.
