"Not necessarily. They wander the earth, some still seek physical nourishment, they can be summoned...that's where I come in," Pierce said, closing the cupboard and turning to face Naea. "I've been seeing dead people for decades. I guess I should add 'Medium' to my business card," he snickered, then went back into the living room.
A thin layer of salt was spread on the windowsill. "Make sure to clean this up tomorrow morning," he advised. Attracting bugs was not desirable either. "I'll put some in your bedroom too. Anyway, salt is a cleanser, but some cultures believe that a ghost has to stop and count each grain before he can advance further, and thus will give up before he can finish. Usually I just tell them not to bother me when I don't want to be bothered and that works but you're new at this."