http://www.epa.gov/mercury/consumerinfo.htm
U.S. Environmental Protection Agency
Mercury is contained in some of the products we use and in some of the fish we eat. It can be found in your home, in health care facilities, at the dentist, and at schools. This page provides information about consumer products that contain mercury, programs to reduce the use of mercury in these products, how to safely dispose of mercury, and what to do if mercury is spilled.