Follow this link to read a little educational piece entitled Working with Designated Substances and Hazardous Materials. It outlines how such matters should be handled. We are thankful to EACO for publishing accurate and well detailed information that informs both the public and our industry on best practices.  http://www.eacoontario.com/pdf/2014/EACO%20Letter%20to%20Stakeholders%20Regarding%20Hazardous%20Substances.pdf