You’ve just finished a shower or bath. You pull the plug (or flip the lever), expecting the water to swirl away. Instead, you’re left standing in a murky, soapy puddle that drains at a snail’s pace—or not at all. The diagnosis:
The #1 culprit. Loose strands bind with soap and oils to create a thick, fibrous mass that traps water.
This is effective for blockages caused by soap scum or grease (from bath oils), but do not use this if you have PVC pipes , as the extreme heat can loosen joints. For metal pipes, it is safe.