(Last Updated: 9/27/2019)

Disposal instructions depend on the type of bulb.
Halogen, incandescent, and LED bulbs are not hazardous and can be disposed as garbage.
High-intensity discharge bulbs (HID, Xenon, Plasma, or Arc) contain hazardous mercury and must be recycled at a free drop-off mercury lamp recycling site.
How can you tell if your headlamp contain mercury and needs to be recycled? Look for the letters "Hg" (the symbol for mercury) on the bulb or packaging.