drains your plumber may choose to snake the lines from several different places due to access issues. if the lines are accessible from the roof vents that may be the best chose. if the lines are not accessible the plumber may choose to remove the fixture to access the clogged line.
the best way to prevent clogged lines or the need for drain cleaning is to monitor what goes into the lines. the kitchen sink clogs more often than any other line in the house, this is due to the amount of grease that goes down the line. grease is a term that describes almost everything from food waste to soap 