Mail Snails Snails are similar to slugs, but the main distinguishing feature is a large shell that the can draw up into if threatened.
Snails come in a variety of colors including yellow, brown, gray, and black.
They range in size from one fourth inch to a whopping ten inches long. The brown garden snail is one of the most destructive snails, feeding on young plants. Collecting snails in a bucket of salt water will exterminate the pest, along with all of the methods used for trapping slugs.