Utah State University Extension
Slugs and snails are rated by many gardeners as the worst garden pests. Considering their competition, this is a dubious honor. These pests are not insects but are mollusks that are more closely related to shellfish, such as mussels and clams.
Sagers, Larry A. and Rood, Kerry A., "Controlling Slugs and Snails in Utah" (2011). All Current Publications. Paper 886.