Sagging Sewage Technique Traces-- Grime adjustments can make your drain line to sag. When this happens, the area which includes sunk accumulates paper in addition to waste resulting in a blockage.?? ?????? ??? ?????????????, ???????????? ????? ??????????? ??? ??? ?? ???? ????????? ???, ???? ??? ??????? ???? ????? ????????? ?????? .? ???????? ??????