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Business Details
50+ Years
experience
Your Trusted Partner for Commercial Cleaning Services in Detroit
Giant Janitorial has been a trusted leader in commercial cleaning services for over 50 years. Founded in 1966 by Laura and Pete Huthwaite, our company began as a small family operation and has grown to service over four million square feet nightly across Michigan. Our commitment to quality is driven by rigorous employee training programs and direct managerial oversight, ensuring every client receives exceptional service tailored to their specific needs. We specialize in customized cleaning solutions for facilities of all sizes, combining proven methodologies with adaptable service packages. With bonding capacities up to $10 million, we provide peace of mind through reliability and accountability.

Our team of 100 trained professionals delivers comprehensive services including carpet cleaning, window maintenance, outdoor upkeep, and specialized construction cleanup. Recognized as one of Michigan's oldest Women Business Enterprises, we maintain personal client relationships while upholding competitive pricing. Our reputation for excellence has been built through decades of consistent performance and a dedication to exceeding industry standards. We prioritize client satisfaction through transparent communication and adaptable service models. Today, Giant Janitorial remains family-operated, continuing its legacy of quality service while embracing evolving industry best practices.
Services
Carpet cleaning Window cleaning Outdoor maintenance Construction cleanup Restroom detailing Floor maintenance Pressure washing Supply management Event services Wall washing
Details
  • Year established: 1966
Highlights and features
  • We offer over 50 years of proven experience in commercial cleaning services
  • Our team includes 100 trained professionals with direct managerial oversight
  • We provide customized service packages tailored to each facility's specific needs
  • We maintain bonding capacities up to $10 million for client security
  • Our proprietary training programs ensure consistent quality across all job sites
Services
Carpet cleaning
Our professional carpet cleaning service utilizes advanced equipment and eco-friendly solutions to deep clean commercial carpets. We remove embedded dirt and stains while maintaining fiber integrity, extending carpet lifespan. Our technicians follow industry best practices for optimal drying times and indoor air quality.
Construction cleanup
We provide comprehensive construction cleanup services for new builds and renovations. Our team handles debris removal, surface cleaning, and final detailing to prepare spaces for occupancy. We coordinate with contractors to ensure timely completion and compliance with safety standards.
Pressure washing
Our pressure washing service effectively cleans building exteriors, sidewalks, and parking areas. We use calibrated equipment to remove dirt, grime, and contaminants without damaging surfaces. This service improves property aesthetics and helps maintain exterior building elements.
Restroom detailing
We provide thorough restroom cleaning and sanitization services for commercial facilities. Our process includes fixture disinfection, surface cleaning, and supply replenishment. We use hospital-grade products to maintain hygiene standards and prevent cross-contamination in high-traffic areas.
Floor maintenance
Our floor maintenance service includes stripping, waxing, and buffing for hard surface floors. We develop customized maintenance schedules to preserve flooring appearance and durability. Our technicians use commercial-grade equipment to achieve optimal gloss levels and slip resistance.
People
Laura Huthwaite
CEO
Laura Huthwaite co-founded Giant Janitorial in 1966 and has led its growth into Michigan's premier commercial cleaning service. With over 50 years of industry experience, she maintains direct oversight of operations and client relationships.
Questions
What types of commercial facilities do you service?
We clean a wide range of commercial properties including office buildings, retail spaces, industrial facilities, healthcare centers, and educational institutions across Michigan.
How do you ensure consistent cleaning quality?
Our proprietary training programs and direct managerial supervision ensure consistent quality. We conduct regular site inspections and maintain detailed service checklists for every location.
Can you accommodate special cleaning requirements?
Yes, we customize service packages to meet specific client needs. Our team works closely with facility managers to develop tailored cleaning plans and schedules.
What sets you apart from other cleaning services?
With over 50 years of experience, we combine proven expertise with personalized service. Our bonding capacity up to $10 million and dedicated account management differentiate us from competitors.
Do you offer emergency cleaning services?
We handle urgent cleaning requests on a case-by-case basis. While we don't provide 24/7 emergency services, we prioritize quick response for critical situations during business hours.
How are your cleaning prices determined?
Pricing is based on facility size, required services, and frequency. We provide customized estimates after evaluating each client's specific needs and space requirements.