How should I dispose of old light bulbs?
Energy efficient light bulbs such as CFL's are a type of fluorescent lamp that contain a small amount of mercury. To dispose of energy efficient light bulbs properly you must recycle them.
Older style incandescent bulbs typically do not contain toxic chemicals and should be disposed of in normal household waste. These types of bulbs cannot be recycled.
Halogen bulbs can be safely disposed in normal household waste. They cannot be recycled due to the fine wires in the glass that are difficult to separate.