Organic matter and stubborn grime.
This is the easiest and least invasive method. It works particularly well on kitchen sinks where cooking oils have solidified in the pipes. how to unblock sink without plunger
Never mix chemical drain cleaners with other cleaning agents (like vinegar or ammonia), as this can create toxic fumes. If you have already used a commercial drain cleaner, do not attempt the vinegar method immediately afterward. Organic matter and stubborn grime