Foul smell despite draining okay. Solution: Bio-enzyme cleaner or bleach diluted 1:10 with water, poured slowly. 10. Summary Bathroom plug unblockers are powerful chemical tools, but they come with risks to pipes, health, and the environment. For most bathroom clogs — especially those caused by hair and soap — mechanical removal is faster, safer, and more reliable . If you do use a chemical product, choose a caustic gel (not acid), wear gloves and goggles, never mix products, and flush thoroughly after the drain runs free.

Water standing in sink/shower pan. Solution: Remove visible hair from drain stopper first. Then use a hair snake tool. Avoid chemicals if water is completely static — they may not reach the clog.