Sagging Sewage Program Lines-- Grime alterations can develop your drain line to sag. When this occurs, the part that has sunk accumulates paper and squander bringing about a blockage.??????????? ??? ????????? ??? ??????????? ??? ??????????? ??? ??? ????, ???????, ??????? ? ??????, ???????????? ?????????? ?????????? ??? ??????? ?? ????????? ??? ???