Don't know about the roots, but high pressure hose drain cleaners are the way to go as far I am concerned. I have seen them make pipes look brand new inside.
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gold charms
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Some drains have tub stoppers pre-installed. On those, first pop up the stopper and twist to unscrew, then just remove the plate with the trip for the stopper and carefully remove the stopper assembly. This would be a good time to try the "bent hanger" method because this usually has hair and...