For some time the author looked for a tool to let students apply what they are learning about critical analysis in the science classroom to a relevant life experience. The opportunity occurred when a proposal to use environmentally friendly cleaning products in town buildings appeared on the local town meeting agenda. Using a copy of the proposal from the board of health "to limit citizen exposure to toxic chemicals," students from four biology classes discuss and critically debate the proposal. This article describes how the students apply their critical-analysis skills to fight town hall.