I gave up on growing marigolds after I realized they attract every snail within 5 miles. I've given up on Hostas, Crinum, and Calla Lilies too. Even a weekly dose of snail bait doesn't keep them looking nice, and the price of snail bait has skyrocketed in recent years.
I tried growing Hostas in containers with copper tape around the lip of the container, but the snails climbed up the leaves of nearby Irises and dove into the Hosta containers to get at them. They're so resourceful!