Dry cleaning uses solvents rather than water to wash garments. The garments are put into a machine and tumbled, and this agitation and the solvents lift dirt and stains. Here are some factors to consider when having your clothes dry-cleaned. Specific Stains Mention any specific stains when you take items to the dry cleaners, as the stain may need to be pretreated. Let them know what caused the stain, whether it was oil, wine or coffee.