Why do you want to keep chlorinated products out of your shop??

Excerpt from Washington State Department of Ecology Publication # 92-107:

"Chlorinated Solvents include methylene chloride, 1,1,1, trichloroethane and perchloroethylene. These constituents are found in a variety of automotive cleaning and service products. Chlorinated solvents have been associated with a variety of serious health threats. Further they are persistent in the environment meaning they are slow to degrade.

Spent solvents containing these materials are hazardous wastes. When non-hazardous materials like waste oil are contaminated with these solvents, even at very low concentrations (less than 1%) they too become a hazardous waste. This can result in costly waste disposal bills."