I have a "slow" washroom drain from 20-years'-worth of dog hair and lint draining out of the clothes washer. I can actually see standing water at the top of the drain when not in use. What is the best way to clear this drain? Also, is there a way to remove the plastic three-prong (inside drain pipe)whose top sits flush (and seems glued!) to the hard plastic washtub? Does blasting air work? Thanks, Sharon
