Indoor Services Incorporated

Welcome to Indoor Service, Inc. (ISI).

We are a locally owned commercial cleaning company specializing in janitorial, commercial and industrial cleaning, as well as lawn care services in the
Bismarck/Mandan and surrounding areas.

Our expert office cleaning services ensure a worry-free way for your business to maintain a professional atmosphere. We do the work both inside and out, so you can concentrate on your business.

Whether you require daily, weekly or monthly office cleaning services, we will customize an office cleaning or property care program specifically geared for your business. ISI has the resources and expertise to get the job done right the first time.

Think Clean & Green. Choose ISI today!


Janitorial Services

Trust. Work ethic. Meticulous.
ISI professionals go the extra mile to ensure your facility is cleaned and maintained with a standard of excellence.

Complete Facility Care

Our team of professionals are trained to tackle any project. Taylor-made programs to meet any schedule and fulfill all the needs of your business.

Lawn Care Services

You can count on our professional lawn care team to tackle the smallest to the largest lawn care needs.

You can be assured of a job done right by our experienced team, qualified supervisors, and state-of-the-art equipment.