The six to 8 foot lengths are very considerably all that is important as most rest room drains dump ideal into a larger three or 4 inch mainline, and if you still are obtaining plugged up, then it's time to contact a plumber or rooter company to wash the leading strains by using a larger machine. We when pulled 2 wash rags outside of the mainline about forty feet in, no a lot more troubles there and liquid cleaner under no circumstances might have performed it.