I paid Stuart Services to come out and fix a problem, and I still have the problem. I was getting some fumes from the sewer exhaust, and they got up in my attic and said that was where the problem was originating, from one of the vent pipes, and was also why I had some water in my walls. I suspect that the real source of the problem is my washing machine exhaust. Anyway, they charged me $800 to glue a couple of PVC pipes back together, which I thought was way too much money for that. To make it worse, I still have the problem, so I am not very happy with them.