Ok, I need some major advice! We bought a foreclosed home in March of this year. A week after moving in, my husband and father in law spent 6 hours snaking the sewer line and finally got it going again. 2 weeks ago we had the same issue arise, however it took 6 days and 150ft of snake to get through and get our toilet flushing, washer draining and sinks draining again. (The clean out pipe had actually overflowed into the yard and the neighbor ran over to tell us about it). Now, we having the issue again. We ran 2 loads of laundry today (not back to back) and the toilet started gurgling. My husband ran out and took the cap off of the clean out pipe and sure enough, there is standing water...AGAIN!!! We aren't sure now what to do. Does anyone know what this could be?! The house was built in 1920 and the clean out pipe is the old clay style so I am assuming the entire line is as well. We are starting to lean towards it being a busted pipe because if it was a tree root would it really clog back up like that? Any help or thoughts would be much appreciated and if you need more information I will provide you with any info I can! Thanks in advance!