We promise clarity and reassurance with every project
I’m Garrett Dayfield, owner and operator of MTSO
Garrett Dayfield leads Mold Testing Services of Oregon (MTSO), a company renowned for its commitment to quality and integrity in mold inspection and testing. A second-generation mold inspector, he joined the family business in 2005 and assumed ownership in 2012, continuing the standard of excellence established by his father.
With a thoughtful demeanor and a solutions-focused mindset, Garrett is dedicated to helping clients create healthier spaces. Having completed thousands of inspections across the Portland Metro area, he personally oversees most projects, ensuring detailed, professional service tailored to the unique needs of residential and commercial properties.
Learn about the health benefits of a MTSO service here
Yes, we provide services in Southwest Washington, offering mold testing and inspection in this area.
We do not accept samples for analysis, as we focus on conducting on-site inspections and tests.
No, we charge for our mold testing services to ensure impartiality and objectivity in our results.
No, we specialize in mold inspection and testing only to avoid conflicts of interest.
Yes, we are certified by MICRO (Mold Inspection Consulting and Remediation Organization), recognized by the City of Portland, and fully insured for your peace of mind.
Yes, we offer mycotoxin analysis, conducted by RealTime Labs, a recognized leader in the field.
Every project is unique, just like the clients we serve. Interested in learning more about our services and how we can support your specific needs? Give us a call, and we’ll provide a tailored quote that fits both your project requirements and budget.
If you’d like further clarification or wish to discuss your concerns in more detail, we’re happy to schedule a video or phone consultation at your convenience.
