We called Dry Pro after our exterminator service provider indicated that the humidity level in our crawl space was over 90% at his last bi-monthly visit. He indicated that this would cause problems with mold and possibly ruin our insulation and damage our joists. I am someone who keeps our air conditioning in the house at a very cool temp (and that won't change!), and we determined that it was contributing to the problem due to the condensation from the ductwork and the high heat and humidity of the summer. Since we had just had major work done last summer replacing our HVAC system, installing new duct work and insulation, we felt we had to get this problem taken care of. We used Angie's List and determined that we would have Dry Pro come out for an assessment. Unfortunately we had to wait over two weeks for an appointment because they were so busy due to the high heat and humidity this summer. However, on the day of the appointment, Scott was on time and provided a detailed explanation of possible remedies. We elected to go with the dehumidifier, sealing our vents, and encapsulation of the crawl space with the thickest poly available. Prior to the installation, we had a dry-out procedure carried out over two weeks because it was so damp. Then on Aug. 30 and 31, a crew came to do the installation. They were efficient and cleaned up completely as they worked. In the process of doing the procedure, they found two minor leaks in our copper piping, so we were able to get those repaired before we had a major problem. Once completed, the crawl space is now dry and looking pristine. Our plumber was very happy when he came to make our repairs...such a nice place to work! Cons: I felt like the procedure for the dry-out prior to the encapsulation was too expensive for what was done. Basically they put out four box fans in the corners of the crawl space and a temporary dehumidifier which had a line running out of the crawl space. The charge was $350 for that. If I had known that was what was involved, I might have elected to try and do that myself, although I don't know if I could have found a dehumidifier. And they didn't even leave the box fans for me, even though they were new!!! They also closed off the vents, but did not seal them during this process, although they did when the encapsulation was done. Pros: The entire system seems to be working well...we have a small unit in the house where we can monitor the humidity level underneath the house, and so far we are happy. Although we probably paid a little more than we expected, I am pleased with the work that was done. We are very hopeful that this procedure will finally take care of the humidity problem underneath our house.