People who hoard have difficulty discarding items, have problems with too much clutter, and/or have a problem with acquiring too much. Their living spaces are often so cluttered that they can no longer use rooms, furniture, appliances and/or other objects for what they were originally intended. Hoarding is low incidence (about 2-3%) but demands attention because of its high costs. Residents face threats to housing stability (most eventually lose their housing) and to health from falls, lack of egress in emergencies and refuse.