I found out by accident one day that slugs hate coffee. I had spilled some from my cup while working in the garden and a slug nearby reversed course and "ran" away from the coffee. So I began saving used coffee grounds and sprinkling them around my plants. Slugs will not go near it! Use only black, no sugar, leftover coffee or grounds. Not only will the slugs stay away but plants love coffee! Coffee makes a great fertilizer too!
By Teresa A from Ann Arbor, MI
This page contains the following solutions.
The next time you have coffee grounds, dump them in the garden. They will keep slugs and other pests away.