Hoarding Disorder - the compulsive need to collect and keep possessions, animals, or even trash - is estimated to affect as much as five percent of the population. In New York City where neighbors share walls, a hoarding resident often becomes a community problem. Fires, odors, roaches, bedbugs, mice, and other pests flourish in hoarding conditions, and can all travel from one apartment to another and quickly compromise the health and safety of everyone in the building. Friends and family of a hoarding resident may be aware of a problem, but unsure about how to help their loved one; building managers may first become aware of a hoarder when the super attempts to make a repair and is either denied access to the apartment, or finds that the kitchen or bathroom is blocked by ceiling-high stacks of paper or trash. Boards may first become aware of a problem when they receive complaints from the neighbors of hoarding tenants - and by then, the situation is often dire.