Slugs and snails are mollusks, not insects. Snails have brown shells; slugs do not. Slugs come in many colors and sizes, but the 1-inch-long brown garden slugs are the most common pest of plants. Both snails and slugs rasp large, ragged holes in leaves and flowers.

Commercial product: Iron phosphate (Sluggo, Escar-Go!, Worry Free Slug and Snail), copper barrier
Home remedy: Handpick at night. Apply coarse sand.

Gentle pest controls