Many types of light bulbs contain metals such as mercury. Examples include:
- Tube- and compact-style fluorescent bulbs, including compact fluorescent lamps (CFLs)
- Mercury vapor bulbs - i.e., high-intensity lamps with blue-white, originally used as farmyard lights
- Metal halide bulbs - i.e., newer, more efficient high-intensity lights
- High and low-pressure sodium vapor bulbs - i.e., yellow lights used for outdoor security lighting
Because these bulbs contain metals and toxic chemicals, they should be properly disposed of to avoid contaminating the environment or harming human health.
Visit WIDNR Recycling Light Bulbs.