Department 56 recommends using a soft brush or feather duster to remove surface dust. You can also use a hair dryer on a low, cool setting, or canned air (used to clean computer keyboards). Do not use a liquid spray, water or a soapy water solution to clean your buildings or accessories as this may damage the finish.
If your Village pieces have been subject to any more serious damage, such as water damage, it's recommended to contact a local restoration service in your area for professional assistance. They have the materials and expertise to assist you in cleaning more deeply.
Keeping the packaging that accompanies your Village collectible is designed for protection and storage, and is a great way to keep the items clean throughout the storage process.