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How should you remediate MSI-1 Zones?

Have you been introduced to our Mold Severity Index (MSI) yet? This is a tool that helps contractors define the mold levels of a zone within a property. It is based off of the conditions defined by the IICRC but goes more in depth so the best application can be practiced to treat the zone and yield the best results!

This is a quick break down of MSIs




MSI-1 Remediation

To start, we want to tell you how to remediate an MSI-1 zone, which can quickly be described as elevated mold spore levels. This is the first point where remediation should take place. It is important to act at this point in order to prevent visible mold growth, which takes place in MSI-2 through 5.

In order to get the best results we recommend practicing Dutrion Fumigation within the zone to successfully remove mold spores and prevent further growth. This recommendation is based off of the EPA 2013 Laboratory Evaluation of the Efficacy of Chlorine Dioxide... If you would like to learn more, about the EPA study, look at this document!

Also, we have created materials to help you walk through Dutrion Fumigation. These resources can be found under the Learn tab, on the Procedures page.


The first tool is an in-depth Step-by-Step guide. It will take you through what materials are needed to complete the job, how you should prepare, how to scale what product you will need, and use instructions. One exciting thing about this guide is that it introduces our Dutrion Fumigation Sizing Equation to help you know how many Dutrion kits or tablets you will need to complete the job.


The second tool we have created is a Cocktail Card. This is a resource that you can quickly pull up on the job and remind yourself of some steps that need to take place or materials that will be needed. It also offers some helpful tips so you can ensure you are giving your customer the best results.


Highlighted Products for MSI-1 Zone Remediation:


Dutrion Powder 20, 525-Gram Kit


Dutrion Powder 20 is the most concentrated 2-part chlorine dioxide system available on the market for commercial use.

When used as directed, the Dutrion Tablet is proven to be effective against pseudomonas aeruginosa, staphlyococcus aureus, klebsiella pneumonia, salmonella enterica, odor-causing bacteria, fungi, mold and mildew.





Sorb Assist


SorbAssist was formulated from a blend of essential oils for safety but with the performance to mask the most pungent chemical odors. It can be diluted into cleaners, stain removers and disinfectants, and it can be diluted and used alone to freshen spaces after jobs.


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