I recently purchased a home, apparently the sewer line had not been used in about two years, in other words the toilets had not been flushed in two years, showers not turned on as well. Recently started using the toilet, in about a week I had a problem where water and crap started coming out one other toilet when one was flushed. I don't know if I need a new sewer line or a clean out. Also, I had a plumber come and run a snake and nothing changed. Any ideas, opinions, comments would be greatly appreciated. Thanks!