Sagging Sewage Method Strains-- Grime adjustments can develop your drain line to sag. When this happens, the section which has sunk accumulates paper and waste resulting in a blockage.?????????? ?? ????? ??????? ?????????? ??? ???????? ??? ??? ??????????? ?? ??? ?????? ?????????? ????????? ?????????? ?? ???? ??????? ???, ???? ??? ???? ????? ???????