Bathtub Blockage Access

Remove the drain stopper. Boil a full kettle of water. Pour it directly down the drain in a slow, steady stream. This melts soft soap buildup and breaks down greasy residue.

Gel-based chemical cleaners (like Drano or Liquid-Plumr) are thick enough to stick to standing water and vertical pipes. However: They rarely clear full blockages, they are toxic to pets and septic systems, and repeated use will corrode old metal pipes. Use them as a last resort, not a monthly habit. bathtub blockage

If you have snaked the main drain and the tub still won't drain, remove the two screws on the overflow plate. Pull the linkage out carefully. You will often find a massive ball of hair wrapped around the mechanism. Clean it off, reinsert, and test the water flow. Nine times out of ten, this is the hidden culprit. If you have tried boiling water, baking soda, the zip-it, and cleaned the overflow linkage, and you still have standing water after 30 minutes, you likely have a vent stack issue or a deep main line clog . Remove the drain stopper