How Do You Remove Black Sludge That's Clogging A Bathroom Drain?
Foul-smelling black sludge is a common cause of clogs in bathroom drains. The black sludge is a biofilm that's produced by bacteria. Organic material that enters your bathroom drains like hair, dead skin cells, and oil provide a food source for bacteria in your drains, and they'll produce a biofilm as they eat it. The biofilm is made up of the waste they produce from digesting food along with dead bacteria.