Brass economy padlocks from Lock America are available keyed alike in five colors that match the most common portable restrooms. The range of color options gives operators the opportunity to dress up their product line. In addition, the locks prevent theft of paper products, which can be a significant long-term expense, deter vandalism and provide better customer service by ensuring clean units. Durable chrome-plated brass shackles and brass bodies make them virtually rustproof. 800/442-2866; www.laigroup.com.