fill the sink half full with water, and then plunge until the sink begins to drain. Use paper towels or rags to wipe out the black gunk and sludge that is pulled out by the suction of the plunger; don't let it go back down the drain. ...
Soap scum is especially prevalent if you have hard water. It can build up in your pipes over time and foster mold and mildew. If your bathroom sink is clogged with a black sludge, try the method below. Pour a pot of boiling water down the drain or use baking soda and vinegar to disl...
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