Now, slugs like to dine on tender foliage of a variety of annuals, perennials, and even turf. However, slugs need moist soil and other areas in order to survive dry periods. Juvenile slugs are able to squeeze into cracks, crevices and even worm holes in the soil in order to survive drought. Larger slugs usually find other hiding places, under landscape timbers, within mulch, etc. Mulch is piled on, spring after spring.
Many landscapes have six or more inches of mulch.
Slugs might also surprise you as to just what they will eat. On a muggy night, take a good flash light and inspect your flowers, shrubs, sidewalks, and even walls and tree trunks. A couple of years ago, I was mystified as to why my yard was the only one in the neighborhood infested with the giant leopard slug. On a night patrol, I found out why my yard had so many. Earwigs are also showing up in considerable numbers.