Sagging Sewage Technique Traces-- Filth alterations can make your drain line to sag. When this happens, the area which has sunk accumulates paper in addition to squander bringing about a blockage.??????? ????? ????????? ?? ????? ???????, ?????????? ??? ??????????? ??????, ??????? ??? ?? ????????? ??? ??? ???????? ??????????.?? ?? ???? ?????? ??????