Serving Metro Detroit Since 1968

Giant Janitorial has been helping organizations throughout Metro Detroit maintain clean, safe, and welcoming environments for more than five decades.

Built on Dependable Service, Detail, and Long-Term Relationships

Since 1968, Giant Janitorial has been helping organizations throughout Metro Detroit maintain clean, safe, and welcoming environments. As a family-owned and woman-owned company, we have built our reputation on dependable service, attention to detail, and long-standing relationships with the clients we serve.

For more than five decades, we have remained committed to the values that have guided our company from the beginning: professionalism, accountability, and exceptional customer service. While our industry has evolved over the years, our dedication to providing reliable, high-quality service has never changed.

Recognized for Excellence in Business

Giant Janitorial is proud to be led by a dedicated woman business owner whose leadership reflects the company's values of trust, service, and accountability. Learn more about her Women in Business Award and the recognition behind Giant Janitorial's continued commitment to excellence. Laura was an Entrepreneur of the Year Finalist in 2007 and 2009.

How Laura Huthwaite cleans up with Giant Janitorial Service – By Kathy Simmons – January 2006, Smart Business Detroit

Laura Huthwaite doesn’t mind rolling up her sleeves and getting her hands dirty. As CEO of Giant Janitorial Service, she is actively involved with a staff of 100 employees who have been keeping commercial properties sparkling clean for more than 50 years. The business started as a part-time job when Huthwaite was working for Merrill Lynch while her husband, now Giant Janitorial’s president, was in school. They needed extra income and found a way to make it by cleaning a small insurance office. The business quickly expanded, and Huthwaite decided to devote herself full time to managing its growth. Huthwaite credits her father, an Italian immigrant, for her strong work ethic. He was a Detroit bus driver who came to the U.S. when he was 14 and supported his mother and two brothers for years, she says. Although I have met many admirable people in my business, my father instilled the qualities in me which have contributed to Giant’s success. Smart Business spoke with Huthwaite about how she finds great employees and how she balances quality and price at her business.

Supporting the Organizations That Help Metro Detroit Thrive

We are proud to support the organizations and institutions that help Metro Detroit thrive. As we continue to grow, our mission remains the same: to provide dependable, professional cleaning services while building lasting partnerships based on trust, integrity, and performance.

At Giant Janitorial, we believe quality service begins with quality people. Through ongoing training, hands-on management, and a commitment to excellence, our team works every day to deliver consistent results and responsive service for our clients.