Devin came out a few days ago and was snaking the drain lines by moon light. Two days later we had another back up so they sent him to purge the lines one more time and we both knew there was a bigger problem. Today he sent a camera down the line and the scale inside the pipe was pretty bad plus we found a slight sag in the lines. So I had him pull both toilets and snake the heck out of them. We flushed the lines and are awaiting power jetting.