I have used Squeaky Clean & Dry on two occasions. I was having air quality issues, and sinus problems. The owner of the company came out, and he advised me to remove some fertilizer that I was storing in my garage. He also advised me to install an air quality device in my furnace. I agreed, and they installed the device for me, and made sure that it worked. The house certainly smells cleaner, and I think there has been some difference in my sinus issues. They are very knowledgeable about mold and air quality issues, and all the bad stuff that can build up in the air. And, whatever he recommends improves the air quality!