Jani-King is the world's largest commercial cleaning franchise company with more than 12,000 franchisees serving tens of thousands of customers. Through a global network of more than 120 regional support offices worldwide, Jani-King offers superior commercial cleaning services. Headquartered in Addison, Texas, Jani-King is consistently recognized as the #1 Commercial Cleaning Franchise Company by Entrepreneur magazine. Jani-King of Southern Ontario is one of many Jani-King Regional Offices, which supports our franchise owners in the GTA, Hamilton, Niagara, Windsor & London areas.