Sagging Sewage Program Lines-- Grime alterations can build your drain line to sag. When this occurs, the section which includes sunk accumulates paper together with squander leading to a blockage.?? ? ??????????? ????? ???? ??????? ???? ??????????? ?????, ????? ?? ????? ??????? ??? ????????? ???, ?? ?????? ???? ?? ??? ?????????????.?????????? ?????