The Welsh government has published guidance to help businesses comply with European waste laws.
The publication provides advice on processing unwanted materials in the best way for the environment.
EU law requires firms to apply the waste hierarchy when making decisions about their waste management.
Environment minister John Griffiths said: “Many Welsh businesses and public bodies are not fully aware of how much waste management costs them, or indeed how they could save money and resource by managing it more cost effectively.
“The waste hierarchy is all about managing waste in an environment friendly manner. It also makes good business sense to adopt the waste hierarchy.
“In practice this means preventing waste wherever possible and, where waste is unavoidable, looking to refurbish, repair or recycle before considering energy-from-waste or landfill.”