Researchers believe that hoarders process information differently than other people. They may focus on unusual characteristics of objects that make items seem more valuable than they are, which makes it more difficult to throw them away. They may also organize items visually and spatially, rather than categorically. Understanding the causes of hoarding can make hoarding cleanup services more effective, because it allows adjustments to be made to prevent a relapse. In addition to cleaning assistance, most people need hoarding help to completely overcome their problem.