Under Title 18, Section 1725 of the U. Code, it is illegal for anyone other than the property owner, authorized residents, or Postal Service employees to deposit items in a mailbox. In the United States, for example, the Postal Service has exclusive rights to deliver mail to mailboxes, and unauthorized use of mailboxes for non-postal purposes can be considered a federal offense under Title 18, Section 1725 of the U. This includes placing items like advertisements. Some items are prohibited (completely forbidden). Hazardous materials (HAZMAT) might be prohibited or restricted. Reminder: Mercury (a silver metal. What is The Joint Commission's position on managing cardboard or corrugated boxes and shipping containers? Ambulatory > Infection Prevention and Control (IC) Ambulatory > Life Safety (LS) Critical Access Hospital > Infection Prevention and Control (IC) Office Based Surgery > Infection Prevention. Not everything is meant to be stored in a storage unit. Failure to comply with this list of banned items could result in penalty–or worse, eviction. While prohibited items will vary from storage. Think of your home's distribution box as the Grand Central Station of your electrical system. The National Electrical Code (NEC) requirements might seem like bureaucratic. Posting or affixing materials, such as pamphlets, handbills or flyers, on bulletin boards or elsewhere in the GAO Building or on its grounds is prohibited, except as authorized by these rules and regulations or when such displays are conducted as part of authorized government activities.