Good question Arc. I have not noticed this for a fact but I hear the Walmart across town may have a few ghostie visitors. I heard it was built over an old grave yard. They relocated the graves and the stones. Some of the spirits liked the old grave yard better and they usually try stuff late at night.
I have another ghost story too. It is not at Walmart but a house we used to live in when my oldest daughter was a baby. The house at one time had panel doors but someone removed them and threw them away so the house had rooms but no doors, thankfully the bathrooms had doors. When it would be really quiet in the house no tv noise in the background and baby taking a nap I would hear music, usually just really soft music not quite loud enough to know the song. I would check all of the windows and no cars were going by on the street or in the alley. Once or twice a week I noticed this. I said something to my husband and he had not heard it but thought it was odd. One Saturday I went to run an errand and left my husband and the baby at home. When I got back he said he heard the music too but could not tell where it came from. Our daughter would wake up from her nap usually laughing and talking with someone. She did not have a name for the person just someone that she talked to. My husband found a new job and we put the house on the market and we had a sign in the yard and they had all of the agents in the area come see new listings and one of the agents said his Auntie used to live in the house a few years before. She live in the back and she rented out the front she listened to a radio in the back. Usually the bit of music we could hear was a song we thought we were familiar with so we don't think it could have been that long ago. He said she had passed away there 10 or 15 years before. His Auntie really loved babies and loved our daughter. Several other families lived in that house but not very long, I think she scared them away because they did not have small children. I think having a baby in the house made her happy because she never tried to scare us.