Sonic tops list of cleanest restrooms
May 17, 2007
Seattle Post-Intelligencer: According to Corporate Research International, Sonic tops the list of fast food eateries with the cleanest restrooms. Rounding out the Top 10: Subway, Arby's, Dunkin' Donuts, Dairy Queen, Wendy's, Boston Market, Quizno's, Schlotzsky's and Burger King.
