1- Dry vacuum and pre groom. 4- Saturate the fabric with dry solvent cleaning compound. Either vacuum off or absorb solution and soil with white cotton towels. Vacuuming is inappropriate with most machines, unless they are dry solvent capable. Damage to machines and possible fire risk make it impractical.
White towels can remove a fair degree of soil and produce a good appearance.
Technical - This method is a little weak on actual soil removal due to lack of a rinse. It is usually weak on temperature as well, but chemical, agitation and time remain strong factors.