"cleaned out my life" sale: the business of personal cleansing

So, I saw this little sign on Hamline Avenue between Larpenteur and Como the other day and its emphasis on the importance of possessions to one's life caught my attention. I can't help wondering about the whole notion of "life-cleaning." It seems that we are so thoroughly immersed in our possessions that to clean out the garage, loft, bedroom (or whatever) constitutes a personal cleansing, a sort of salvation for the good consumer-subject.