They eat lettuce, herbs and tomatoes. There are almost no obstacles that slugs cannot overcome to get to the local vegetables. Not even the raised bed is safe from the snails. It is all the more annoying when the harvest fails because slugs have already been up to mischief. A simple and cheap method should help to keep the pests away.
Before setting up insecticides and other harmful traps, try natural protective barriers. This not only protects the snails, but also the environment and your garden.