Sagging Sewage Program Traces-- Grime adjustments can create your drain line to sag. When this happens, the area that has sunk accumulates paper along with waste leading to a blockage.??????????? ??? ????????? ??? ??????????? ??? ??????????? ??? ??? ????, ???????, ??????? ? ??????, ???????????? ?????????? ?????????? ??? ??????? ?? ????????? ??? ???