Our Story

Visible Difference Janitorial is led by Mark Ebach, with his son Greg serving as General Manager. Together with their team, they deliver consistent, high-quality commercial cleaning services across Rapid City and Sioux Falls.

See our timeline below to learn how we got here, and meet the team.

Visible Difference Timeline

Use the arrows on either side to explore our timeline.

1998
Founded in 1998

Visible Difference Janitorial was founded by Vern Woizeski in Rapid City, South Dakota, with a focus on delivering reliable, high-quality cleaning services from day one.

2007
Visible Difference Janitorial Old Location Rapid City
A New Chapter Begins

Mark Ebach acquired Visible Difference, building on its strong foundation and setting the stage for continued growth and expansion.

2010
2X 3X 4X Growth Visible Difference Janitorial
Growth and Expansion

Under Mark’s leadership, Visible Difference grew into a leading commercial cleaning company, expanding its reach, building a strong reputation, and growing its team to support increasing demand.

2012
Visible Difference Janitorial Old Location Rapid City
A New Facility

Visible Difference moved into a larger location on N. Riley Avenue in Rapid City to support its ongoing operations and team.

2016
Visible Difference Janitorial Rapid City South Dakota
Our Current Location

With increased demand and a larger staff, Visible Difference moved its warehouse to its current location at 1950 Samco Road in Rapid City to better support daily operations.

2019
Greg Ebach Professional Portait Photo in a Suit 400x600
Next Generation Leadership

Greg Ebach joined the team full-time as Operations Manager, stepping into every role—from after-hours cleaning to operations and client development—to gain a full understanding of the business.

2021
Proudly Serving Sioux Falls South Dakota
Expanding to Sioux Falls

Visible Difference opened a second location in Sioux Falls, South Dakota, bringing the same trusted commercial cleaning services to a new market.

2024
Liam Slavin Professional Photo Visible Difference Janitorial
Strengthening Leadership

As the company continued to grow, Greg stepped into the role of General Manager while Liam joined as Operations Manager, strengthening day-to-day operations across Sioux Falls and Rapid City.

2026
Visible Difference Janitorial Commercial Cleaning Van in Front of a Commercial Building in Sioux Falls South Dakota
Where We Are Today

Today, Visible Difference continues to deliver consistent, high-quality commercial cleaning services across Rapid City and Sioux Falls, built on a strong team and proven systems.

Meet the Team

Our leadership team at Visible Difference Janitorial is made up of dedicated professionals with decades of combined experience. Their commitment to quality service and pride in their work help drive our mission every day.

Mark Ebach Owner of Visible Difference Janitorial Suit

Mark Ebach
Owner

Mark purchased Visible Difference Janitorial after its first decade and has led the company through years of growth, helping build it into one of Rapid City’s most trusted janitorial services.

Greg Ebach General Manager at Visible Difference Janitorial

Greg Ebach
General Manager

Greg supports daily operations and plays an important role in expanding Visible Difference Janitorial in Sioux Falls and Rapid City

Liam Slavin Operations Manager at Visible Difference Janitorial

Liam Slavin
Operations Manager

Liam manages daily operations while focusing on quality service and team success across Sioux Falls and Rapid City

Hannah Whitley - Supply Manager at Visible Difference Janitorial

Hannah Whitley
Supply Manager

Hannah manages the weekly logistics of keeping accounts stocked with supplies.

Chris Hart Manager at Visible Difference Janitorial

Chris Hart
Manager

Chris provides crucial management at our high volume accounts.

Brian Christianson Manager at Visible Difference Janitorial

Brian Christianson
Manager

Brian trains new cleaners and helps ensure proper quality across our many accounts