We use the outside clean out for the point of entry to unclog the main line. Once we had the drain completely clear and running we ran the camera down the drain line and located a route intrusion on the backside of the house. Advised him to not use any items down the drain line that could possibly get caught in the roots will have to get pricing put together to dig up and remove the roots from the system. After a little bit of questioning with the neighbors we found that the line that has the roots is actually a trunk line and not a branch and is part of the main sewer for all the neighbors.