Green Dry-Cleaning
Traditional dry cleaning requires toxic chemicals that can be environmentally harmful. There are green alternatives that can reduce the impact of dry cleaning chemicals and other materials.
Here are some tips:

Chemicals
Traditional dry cleaning machines use a chemical called perchlorethlyene, which contains chlorine and may be harmful to both humans and the environment. Modern machines use less of this chemical, but it is still present.

Alternatives.
"Green" dry cleaners use a newer process that makes use of non-toxic solvents. Having your clothes cleaned at these eco-friendly cleaners costs no more than having it done the old toxic way.

Air out clothes
If you must use a traditional dry cleaner, make sure to lessen your chances of breathing toxic fumes. When you get home, remove the clothes from the plastic bags and let them air out.

Make requests
You can also help out the environment by asking your dry cleaner to put more than one garment in a bag, thus reducing your consumption of plastic. Ask if there is a recycling program for the bags, and recycle whenever you can.

Green Dry Cleaners
Most Best Cleaners offer "Green Earth Cleaning" Services
Ship Shape Cleaners: 270 Federal Road, Brookfield, CT 203-775-3355
Belle Cleaners: 165 Noroton Avenue, Darien, CT 203-655-8279
Belle Cleaners: 22 Heights Road, Darien 203-655-1333

Another alternative is Wet Cleaning:
Wet cleaning —a non-toxic water-based cleaning process that uses computer-controlled washers and dryers, specially formulated detergents and specialized finishing equipment. By removing perchloroethylene or perc from the cleaning process, professional wet cleaning eliminates all the risks and regulations associated with perc use.

Pure Elegance: 1240 Post Road East, Westport, CT 203-221-7448

Still yet another alternative is Carbon Dioxide (CO2) Cleaning:
Liquid CO2 is now being used commercially by a new company called Hangers Cleaners in what its developers say is the first pollution-free process that cleans clothes as well as traditional chemical methods do. Check the link for locations.