EASY SETUP: Each zapper comes with a chain so you can hang it anywhere on a hook or place it atop any countertop, table, or even the floor in problem areas. Typically, hang it high as that is where the nuisances hangout. Safe and secure to use in hospitals, workplace areas, commercial spaces, restaurants, kitchens, warehouses and retails stores. Definitely not for outdoor use. These zappers are not waterproof or water-resistant.