What kind of mollusks are slugs and small snails?

Slugs, commonly known as soft slugs, are like small snails in that they only come out to be active at night, hiding during the day under damp pots or among orchid plants. Both are very harmful to Chinese cymbidiums. For example, they gnaw on fleshy leaves, young shoots and heart leaves, and even eat the tips of orchid roots, seriously affecting the development of the orchid plants. Control: Slugs and small snails are relatively large and easy to spot, so they can be caught and killed when they come out at night. In addition, spraying 70% methiocarb in the orchid house can also effectively control them. (Zhang Fengrong)