As well as snails, slugs can be found in every garden, and they cause a lot of damage to flowers and crops. Even though commercial pesticides are available, they can be toxic for birds or other wildlife, and they can also become less effective after rain, so the most effective way of preventing an infestation with slugs is by using some alternative, natural methods of control.
Slugs are shell-less members of the molluscan class Gastropoda. Related to snails, but different due to their lack of shell, slugs can cause the same amount of damage in a garden as snails do. The great majority of slug species are relatively harmless to humans, but some are considered to be great pests in agriculture and horticulture.
Slugs are best described as snails without shells. They are a type of mollusk, related to clams and oysters. Slugs are soft bodied, generally brownish or grayish, with eye stalks. They vary in size from 1/4 inch to two inches or longer. Slugs leave a silvery slime trail that they secrete as they move.
Slugs are shell-less terrestrial gastropod mollusc. Their body is mostly made out of water and they are easily prone to desiccation. They normally eat decaying plant matter and fungi, however carnivorous slugs do exist. They can eat a wide variety of herbs and vegetables, and even fruits, so they are a real threat to gardeners and their crops.