Sagging Sewage Technique Strains-- Filth adjustments can build your drain line to sag. When this occurs, the section which includes sunk accumulates paper together with waste resulting in a blockage.????? ???? ????????? ?? ?????????? ???? ???????? ? ???????? ??? ??? ??????????, ?? ????????? ??? ??? ??? ???? ?? ?????????, ?? ??????? ?? ?????? ??? ??