Online Fast 500 Promotion: No purchase necessary. Aquafresh Advanced. Sponsored by Hearst Communications, Inc. Start date Monday, September 17, 2007 at 12:00:00 AM. End date Sunday, November 18, 2007 at 12:00:00 AM. The first 500 entries received by Good Housekeeping Magazine will get a sample of Aquafresh Advanced. Must be age of majority in their state or province of residence at time of entry and a resident of the 50 United States, District of Columbia or Canada. Void in Puerto Rico, Quebec Province and where prohibited by law.