Here's the story- Around spring we had a mowing accident outside and accidentally mowed over and broke the covering for the pvc thing outside that gives access to the plumbing(what is that thing called??). We covered it up with a small bucket for a week or so until we got around to sawing it down level and actually covering it up the right way. A few months later we got major draining issues, everything on that side of the house connected to it would drain really slow- we called our home owners insurance and they ran an electric auger and cleared the obstruction and it was all good. Time passes, everything is all good. Last month or so we have had worse draining issues and we can't even use the plumbing on that side of the house without major clogging. We called home owners insurance again and they came out and ran electric auger again but got stuck and pulled back 'roots'. The guy tried about 3 more times but kept getting stuck and he called it quits and said we would need to pay and reschedule for another service where they run a camera down there to check out where roots are coming from and check out the damage and etc. I told em I'd have to think on it and I'd let them know. He said this is a pretty major issue a lot of the time and our home owners insurance doesn't cover it, and after the quick call it turns out our home insurance policy doesn't cover it either. He said he was able to run the auger about 15 feet before getting stuck. The roots appear to be under the house. And there are really no big trees or anything of that nature near that could be affecting from what I can tell. I'm wondering if these were caused from when we broke the cover off outside and left it uncovered for a while and from the mowing debris that went down there?? I don't know much about how this could form or where its from though. I attached two pictures of what he pulled out as far as the roots are concerned. I'm not sure what to do from here. I've read a couple of threads about putting some sort of salt down the drain every week or so to kill the roots and etc. But- wanted to share my story and see if there are any suggestions???? I don't want to cause any more damage, but I don't want to spend an arm and a leg getting it fixed when it could be a minor issue.