One of the things I try to do is to grow herbs for cooking. Parsley, but the snails get it. Mint, from the strains my grandad grew, but the snails get it. Chives, but the snails get them (even five foot off the ground in my porch). The sage is being trimmed into a neat bush shape by the snails. They don't like lavender, they don't like thyme (but it's going), but the marjoram isn't coming up as it should, so I dare say they/ve got that, too. Lemon balm is taking over. I'm going out there on the next wet night, and it'll be brine at point blank range.