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a suburban public high school in Minnesota

How a Suburban High School Reclaimed 4 to 8 Evening Custodial Hours With a Scrubber

A Minnesota high school automated evening floor scrubbing and reclaimed four to eight custodial hours nightly so staff could focus on higher-priority cleaning.

4-8 hrs
Reclaimed nightly
8 hrs
Prior floor time
2
Custodians affected
PM
Evening shifts

Based on a documented real-world deployment. Figures are from public reporting; the organization is not named.

A long empty high school hallway with lockers and polished floors after the school day ends.
Photo: Green odette

Evening floor care ate the custodial shift

A suburban public high school in Minnesota needed to keep corridors and common areas clean without letting routine floor work crowd out bathrooms, classrooms, and detail tasks. Two custodians were spending a combined eight hours each day on floor cleaning alone.

That block of time limited what the team could finish during evening shifts. Leadership wanted to redistribute duties without lowering cleanliness standards or adding headcount.

  • Eight combined daily hours on floor cleaning
  • Two custodians tied to repetitive scrubbing routes
  • Other high-priority cleaning competing for the same shift
Custodial supplies and a mop bucket staged in a school utility area before evening cleaning begins.
Photo: David Brown

Autonomous scrubbing on the evening route

Wide view of a school gymnasium floor that requires regular scrubbing and maintenance.
Photo: cottonbro studio

The district brought in a fully autonomous floor scrubber designed to run a mapped route while staff handled work that still required human judgment. The goal was workflow change, not replacing the custodial team.

The unit integrated into existing evening operations with training on facility-specific obstacles and doorways. Leadership planned a regular daily schedule once full-scale operations resumed after summer break.

  • Mapped autonomous scrubber routes for evening cleaning
  • Staff retained detail work and exception handling
  • Phased rollout from summer testing to daily schedule

Measured time back on the evening shift

By automating floor scrubbing, the custodial team reports reclaiming four to eight hours of staff time each evening. Those hours moved to tasks that require direct attention rather than riding or walking long scrubbing loops.

The school describes the change as redistributing work duties within the existing team to better meet operational needs. Early operation highlighted ease of use, with staff learning facility-specific operating details over the first weeks.

A custodial worker wiping surfaces in a school restroom during an evening cleaning shift.
Photo: Yan Krukau

What this means for US schools and contractors

This deployment was documented at a Minnesota high school and was not run by Service Robot Co. It still shows how a school cleaning robot rental or lease path can buy back a full partial shift of floor care without cutting custodial headcount on day one.

Service Robot Co. helps US districts and building service contractors evaluate autonomous scrubber rental monthly programs, map corridors and gyms, and stand up pilots with training and nationwide service. A vendor-neutral integrator can match the right scrubber to your square footage and doorway layout before you commit capital.

Frequently asked questions

This high school focused on evening custodial shifts when floors could be mapped and run on a fixed schedule. Autonomous routes still need clear hallways and trained staff for exceptions. A site assessment should confirm timing, storage, and charging locations.

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