Vacuum with a tool wrapped with plastic screen and then go home. Draperies often contain fibers no one would use in upholstery fabricI was thinking of just vacuuming these drapes on low suction. I might lightly spray with a rinse spray then suck up. Their not that dirty.
This is what I’ll doVacuum first then odorless mineral spirits on spots. OMS are cheap, $17 at home depot. lightly wipe with white towel.
Or you get an employee who is a little overzealous in applying the OMS and the customer then uses their gas stove or gas dryer or even light a candle. The result is an odor like burnt kerosene. There are not too many people I know who appreciate that smell in their home. It's a tough problem to resolve... ask me how I know.We dry cleaned draperies on location from the early 70s into the 80s when we had a cleaning company, and taught how to clean draperies that way and supplied products for it through the turn of the century.
A few people who were doing it back then still buy the solvents. Be VERY careful with solvent use in a home or building; there have been more than a few fires from solvent vapors igniting from static electricity.
Unless you are very confident that you have good ventilation, the odor from the "odorless" ( curious name for the stuff...) mineral spirits can permeate the building and create customer/employee health complaints. If you think people complain too much about the smell of your presprays and other products, imagine what they will think of this stuff.
I like Bryan's suggestion for today's chemophobic era.
I use to have an arrangement with a dry cleaner. They had a 14 foot pleating machine. I would do the take down/delivery and rehang. Just not enough money in it these days. Not as many drapes around. Many drycleaners who do drapes now offer the pick up and delivery much cheaper than I can do it.I would not advise doing draperies on location for many reasons of liability. (not kidding)
My advise: Take them to a Professional Drapery Cleaning (in-plant) establishment!