If you are a business, try using fluorescent light bulbs. They only use around a quarter the energy of a normal bulb, and last a lot longer. Ultimately helping the environment, and saving you money! Fluorescent bulbs do contain mercury and therefore classified as hazardous waste, and need to be disposed of properly. Although mercury is extremely toxic to the environment, these bulbs (when disposed of properly) are still favoured over traditional bulbs due to their other benefits. Fluorescent lamps must not be disposed of in normal waste and need be taken to recycling centres or specialised collection points. Both businesses and households can now also replace their traditional light bulbs with LED bulbs. These are now available in standard fittings and whilst may be more expensive they have the advantages of lasting a lot longer and using a lot less power.