# Why can the fluids used to dry-clean clothing remove grease even when water cannot?

On the other hand, the use of dry cleaning fluids, which is typically $\text{perc}$, $\text{perchloroethylene}$, ${\text{Cl"_2"C"="CCl}}_{2}$, will lift such a stain, as it is non-polar and capable of dissolving grease.
Note other solvents than $\text{perc}$ are used for dry cleaning. And typically, a dry cleaner (so I am told) will spot obvious stains with some other solvent or stain remover before it is put thru the regular cycle.