There are no government standards for green dry cleaning yet. "Organic is the biggest misnomer in terms of cleaning," says Edelman. Most cleaners who advertise "organic" services use hydrocarbon, an "organic" substance only because it comes from the earth. And hydrocarbon is still considered toxic (and only slightly less so than PERC, short for perchloroethylen, which is used by about 85% of dry cleaners). "The only true organic clean is using water," he says. "But unfortunately not all garments can be cleaned using a water-based process."