4 Best Commercial Cleaning Services in St. Louis (2026)

What people praise

• One reviewer says a franchise owner cleans an 11,000 square foot office twice a week and the company checks on quality
• A customer describes a straightforward sales contact who set up a cleaning and disinfecting contract around their needs
• One long-term client says the same cleaner has been with them for more than ten years
• A customer says an earlier issue was looked into and answered quickly

Worth knowing

• One reviewer reported that cleaning was incomplete after repeated attempts; the company's reply invites a direct conversation

What people praise

• One reviewer describes a deep clean of preschool kitchens after an on-site walk-through
• A customer says the crew did exactly what they said they would in a full-space deep clean
• One reviewer praises floor restoration work as thorough and detail-oriented
• One reviewer says issues were addressed promptly, and another says scheduling and communication were handled for them

Worth knowing

• Office hours are weekdays only, 8 AM to 5 PM, per its website

What people praise

• One customer says they've used it for almost three years with no complaints
• Reviewers say representatives reach out regularly to check on quality
• One business says it switched to Corvus after a poor experience with another contractor and calls the monthly rate reasonable
• A customer describes switching from a previous provider as seamless

Worth knowing

• Google lists weekday hours only, 8 AM to 5 PM

What people praise

• One customer cleans a plumbing, lighting and appliance showroom with it and says there have been no callbacks for missed areas
• A reviewer says a representative walked them through every step and there were no hidden fees
• Customers name their regular cleaners and describe them as responsive and friendly
• One reviewer says the cleaner restocks paper products when running low

Worth knowing

• Rated 4.4, with some one-star ratings among its reviews