Customer had stoppage on whole apartment pulled toilet and ran snake 2 times and then camera the line and found some tar like substance in the line also snake from the clean in the garage 3 times to better access the tar like substance got a lot of the substance out of the line. To fully remove the tar like substance the line must be jetted. All bathrooms and sinks are running good but i was not able to remove all of the tar like substance with the snake. No warranty on stoppages