Hoarding is a complex disorder that is characterized by collecting too many items, difficulty getting rid of items, and problems with organization. These problems can lead to significant amounts of clutter, which can severely limit the use of living spaces, pose safety and/or health risks, and result in significant distress and/or impairment in day-to-day living. Both individual and group CBT have been found to be effective for diminishing hoarding behavior and increasing one’s ability and willingness to eliminate clutter.