Sagging Sewage Procedure Traces-- Dirt adjustments can build your drain line to sag. When this occurs, the part which has sunk accumulates paper together with squander bringing about a blockage.?? ? ??????????? ????? ???? ??????? ???? ??????????? ?????, ????? ?? ????? ??????? ??? ????????? ???, ?? ?????? ???? ?? ??? ?????????????.????? ????? ?????