High school science teachers, supervisors, and chemical hygiene officers (CHO) can turn to a number of internet resources for help when making decisions about hazardous chemical use. Before considering these resources, it is important to research local Board of Education and government policies on hazardous chemicals. For instance, many boards now ban the use of mercury and mercury compounds. This article discusses two outstanding resources that are useful hazardous chemical “hit lists": The Banned Chemical List and Rehab the Lab.