Professional wet cleaning continues to grow as a popular service offered by clothes cleaners, and as a healthier substitute to the use of dry cleaning chemicals. Professional wet cleaning is a water-based, nontoxic, energy-efficient technology that uses computer-controlled washers and dryers, specially formulated biodegradable detergents, and specialized finishing equipment to process garments that are otherwise dry cleaned. Professional wet cleaning is the most accessible of the alternatives to dry cleaning because the equipment used is affordable to small businesses. Wet cleaning uses water and biodegradable detergent in special equipment that washes clothes very gently and sets a specific humidity level for the drying process. Also, special pressing and tensioning equipment is utilized to prevent shrinkage and maintain garment shape. Wet cleaning can be used on most garments labeled "dry clean only."