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