We selected Thrasher because they sounded like a reliable company to fix the problem, and we liked the 35 year guarantee. The crew was done in about four hours and knew what to do. The crew leader explained what they were going to do, and when the job was finished, showed me exactly what they had done. I think you have excellent employees who are very well trained in what to do. The crew cleaned up the mess very well, and covered everything with plastic.