In 2000, the California Air Resources Board reported that 73% of repair facilities in California that performed brake repair used aerosol solvent products.(13) From 1990 to 2002, 30 to 65% of sales of nonchlorinated aerosol brake cleaning products in California were formulated using between 25–90% hexane.(7) In fiscal year 2000, an estimated 3.7 million cans of aerosol brake cleaning products formulated with both hexane and acetone
were sold in California.(7)