Drycleaning has probably been around since the advent of textile clothing. There are many stories about the origin of drycleaning, all centering on a surprise discovery when a petroleum-type fluid was accidentally spilled on a greasy fabric. It quickly evaporated and the stains were miraculously removed. In spite of the name, drycleaning is not completely dry. Fluids are used in the drycleaning process. In the early days, garment scourers and dryers found several fluids that could be used as drycleaning solvents, including camphene, benzene, kerosene, and gasoline. These fluids are all dangerously flammable, so drycleaning was a hazardous business until safer solvents were developed. In the 1930s, percholoroethylene or *perc*(a nonflammable, synthetic solvent) was introduced and is used today in many drycleaning plants. Other cleaning solvents have been added, and still others are currently being tested. Silicon (GreenEarth) and CO2 are two arguably more environmentally benign solvents - but they are still being tested. Driven by concerns about perc and other drycleaning solvents, has resulted in a sophisticated machine-based process called “wetcleaning” which uses water as the solvent. Wetcleaning is done in specially-designed machines that have to be operated by garment care professionals. While professional cleaners have always employed some form of water-based cleaning methods, often by hand, these historic methods bear little resemblance to the new machine-based wetcleaning process.
