Snails, snails and more snails! What to do?

Does anyone have an easy, organic way to keep the snails away? I live on the edge of a wild canyon and find literally hundreds every day. I’ve taken to throwing them over the edge, which has helped, but now my right shoulder is killing me! I’ve used “snail bait” but don’t feel good about the ingredients, and because it attracts snails sometimes I actually end up with more of the critters. Also, once a few hundred have died from the bait, the smell of rotting flesh is horrific. Please help if you can. Thanks!