Waste management involves the generation, prevention, monitoring, treatment, reuse and disposal of solid waste. It addresses minimizing waste, different methods of transportation and treatment, storage, collection, recycling, the environment and landfills. The core ideas are reducing, reusing and recycling waste through its life cycle from design to disposal. Another key concept is resource efficiency to reduce the negative impacts of production, consumption and waste. The "polluter pays" principle also dictates that those who pollute must pay for environmental damage.