Slugs are found outside around vegetation and items in contact with the soil, and they hide in damp places during the day. They are considered significant pests by many gardeners, as they feed on and damage many types of plants. Damp, mild and calm conditions cause favorable temperature and moisture conditions to increase slug activity.

Slugs will create a slimy trail wherever they crawl. Large numbers of slugs can develop around a home or other buildings, typically being seen on decks, patios, and even indoors. Snails are primarily nocturnal, preferring to feed in the evening or on dark days.