Metro Atlanta Radon Mitigation did outstanding work doing radon mitigation in our home, which was up for sale and needed the levels below a certain threshold. The first visit - which was comprehensive indeed - did not bring the levels down to meet EPA requirements, so in keeping with their 10-year warranty, they came until it was fixed at no additional charge. Special thanks to owner Paul Sather, who personally walked us through every step of the process, kept us informed of progress, and did so in a friendly and professional manner. The crew was courteous and diligent, and cleaned up the construction detritus after their visits. This is a top notch outfit, and I strongly recommend them.