All lamps and bulbs other than incandescent bulbs require proper disposal. These items contain mercury and other heavy metals that can be harmful to people and the environment.
The City of San Diego offers eight (8) one day Collection Events every year. Lamps and bulbs are accepted at these events.
The City of San Diego accepts fluorescent lamps/bulbs, compact fluorescent lightbulbs (CFLs) and light-emitting diodes (LEDs) at their HHW Transfer Facility by appointment only. Incandescent light bulbs do not contain toxic chemicals, so you may dispose of them with your regular trash. You do, however, need to be careful of glass shards just as you would when disposing of any other glass objects.
How to Handle Fluorescent Lamps and CFLs - California Department of Toxic Substances Control