Sagging Sewage Method Strains-- Grime alterations can build your drain line to sag. When this happens, the area that has sunk accumulates paper and also squander leading to a blockage.????????????? ????? ?????????? ???? ?????????? ????????????? ???? ???????? ??? ??? ??? ??????, ???? ??? ??????? ?????? ??? ????????????? ?????????? ??? ??? ?? ???????