How do I get rid of hard shelled snails?
Multnomah County Oregon snails
Thank you for your question about snail control. We have several species of snails in Oregon and, although you might not want to know much about them, here's a link to an Oregon publication to help you identify what you have in your garden. As to control, there are a variety of techniques, ranging from exclusion to chemical controls. If you take some time to read about the various methods in this article (from Management to the end), you can become an expert! Know, however, that you're never going to 'get rid' of them. They're a combination of natives and aliens.
Hope this is helpful. Good luck!