Cost is always a driving factor and reducing operating costs provides a compelling incentive for hoteliers. Cost reduction and efficiency strategies can be achieved by investing in better operational procedures and emerging environmental technologies. Many hoteliers now employ a variety of strategies to reduce, reuse, and recycle waste. Other emerging areas include sustainable procurement, indoor environmental quality (focusing on air quality and chemical/cleaning product use), and staff training programs (which can facilitate improved performance and higher levels of employee satisfaction/retention).