Brass economy padlocks from Lock America are available keyed alike in five colors to match the most common portable restrooms. They feature durable chrome-plated brass shackles and brass bodies, making them virtually rustproof. They allow an operator to prevent theft of paper products, which can be a significant long-term expense, deter vandalism and provide better customer service by ensuring clean units. 800/422-2866; www.laigroup.com.