Slugs usually come out at night and feast on low-hanging leaves, so they are often not noticed clinging to your crops and gorging. You have to look for evidence of their nocturnal attacks in the light of day. It can be difficult sometimes to determine the culprit of your plant damage if you can’t see the offenders in action. Knowing what types of plants attract slugs can help — they prefer to feast on lettuce, peas and strawberries in vegetable gardens and tulips and hostas in flower gardens, among others. Then look for telltale signs such as large holes on plant leaves and visible slime trails on leaves and any adjacent stones or nearby structures.
Slugs prefer to hide out in wet, damp areas of your garden, particularly any areas that get little to no sunlight. They hide during the day under leaves, stones, boards and bricks close to or in the garden itself. Keep your gardens clear of things they can hide under as much as possible to help cut down on their escapades.