When I discovered a mold problem in a rental house, I called Great Environmental to assess the problem. They used state of the art equipment, reviewed the results with me and took the time to explain the results to the tenant living in the house. They designed a plan to fix the issue, and it worked well. They showed up promptly for appointments, and they answered all of my questions. Their service is not inexpensive, but it was worth it to fix the problem. I’d have no hesitation about using them again.