Wet cleaning refers to methods of professional cleaning that, in contrast to traditional dry cleaning, avoids the use of chemical solvents, the most common of which is tetrachloroethylene (commonly called perchloroethylene or "perc").

Dry clean only clothes should not be washed in a regular washing machine as it can cause shrinkage, color bleeding, and fabric distortion. Ignoring the dry clean only instructions can lead to costly consequences such as damage that may require expensive repairs or replacement of the garment.

Perchloroethylene (PERC) is the most common solvent used for dry cleaning in the United States. PERC is a reproductive toxicant, neurotoxicant, potential human carcinogen, and a persistent environmental pollutant.

Do Not Dry Clean Symbol. A circle with a large cross through the middle means that the clothing cannot be dry cleaned; this may be because the items are too delicate to withstand the chemicals that dry cleaners use.