I have a buddy that told me this story. He had a technician out to a backed up sewer in a residential home. The guy went out to the house and removed the toilet to clean the line. He didn't realize that it had an ejection pump, and the blockage was in the discharge line. Once he got the line cleared, the pump kicked on and filled the bathroom with sewage. It covered the tech, and looked like a sh** bomb went off. The manager got a call from the customer, stating that there was a problem, and that the tech was having a heart attack. A real one!!! My buddy had to go out clean the mess up and fix the problem...what a mess!