OPAL Switches and Sockets - CFL (compact fluorescent light) bulbs can release dangerous mercury when broken, and hence can be dangerous at times. Switch to OPAL's eco-friendly and chemical free LED Bulbs
Dangers of CFL Mercury Light Bulbs | Snopes.com
CFLs - Compact Fluorescent Lights - Less Is More
Mercury in Compact Fluorescent Lamps (CFLs)
State ban on mercury containing lightbulbs goes into effect Jan. 1 | The Chester Telegraph
Recycle light bulbs, keep mercury out of the environment | The Reflector
Safe Cleanup Tips for Broken CFLs | Poison Control
Disposal of Lamps that Contain Mercury - Utah Department of Environmental Quality