Step 4 · Access the Drain and Block the Overflow
To gain access to the pipe, you must first remove the drain strainer or stopper from the bathtub drain opening. This may require a screwdriver for some models, while others can be lifted or twisted out by hand. Next, locate the overflow plate, which is the metal plate with slots or holes located on the wall of the tub below the faucet. This overflow connects to the same drain pipe. To prevent water from backing up and shooting out of this opening, you must block it. Take one of your old rags, get it thoroughly wet, and wring it out slightly. Tightly pack the wet rag into the overflow opening, ensuring a complete seal. This step is critical for directing all the water pressure from the bladder towards the clog.