I have had a some backups in all the floor drains in my house, which is on a slab. I put a check valve in the laundry room to keep the sewage from backing up in there but in both my shower and tubs sewage comes up from the drain and leaves "crap" in there. I had a plumber out last week that put a camera down the cleanout and could barely see a root because of too much water.. Next he put an auger snake through it and everything seemed ok for about a week, but then today another backup. What are my options here.. I have a call into the plumber again and should come out in the next day or so. Hopefully he wont charge me for this call as the problem is exactly the same and I dont think I can shell out another $475.00