Many McThanks for Your Interest!

Tersano® is committed to Changing the Way the World Cleans by replacing toxic cleaning chemicals with sustainable cleaning technologies.

McDonald's has introduced Tersano's Stabilized Aqueous Ozone (SAO®) to clean front-of-the-house areas, achieve carbon zero goals, and make the world a cleaner and safer place.

For more information on Tersano and McDonald's teamwork, please explore the resources below!

McDonald’s Testimonial

McDonald’s Case Study

Tersano SAO® Best Practices

For more information on SAO®, explore our Data Sheets:

Tersano’s SAO® Safety Data Sheets

Tersano’s SAO® Pathogen Summary

Tersano Innovation

How it Works

McDonald’s Enjoys Operational Simplification with SAO®

SAO® is an approved sanitizer for up to 24 hours and a cleaner for up to six days. This simplified process dramatically reduces training and cleaning time.

The Science

Step 1. Using patented technology, cold tap water enters the cartridge where food grade resins remove select minerals.

Step 2. The solution then passes through the lotus® PRO dispenser, where oxygen (O2) is converted to ozone (O3).

Step 3. The ozone (O3) is then infused into the filtered water to create Stabilized Aqueous Ozone (SAO®).

Step 4. SAO® is an oxidant and attacks dirt and germs to clean, sanitize, and deodorize surfaces.


A Picture is Worth a Thousand Words

Picture (A) shows McDonald's floors before being cleaned with SAO.

Picture (B) shows McDonald's floors seven days after being cleaned with SAO.

Picture (C) shows McDonald's floors twelve days after being cleaned with SAO.

McDonald’s and Tersano’s SAO® are Changing the Way QSRs Clean. Contact Your Tersano Team to Join Us!

Steve Hengsperger

Founder and CEO, Tersano



Melissa McMahon

VP Strategic Accounts, Tersano



Gerard Holmes

Director, QSR Category, Tersano



Neil Maddox

Green Tree Innovations



David Vagg

Green Tree Innovations



SAO® is Certified Safe

SAO® is Certified Safe

McDonald's is Lovin' It

McDonald's is Lovin' It