Step 2 · Select and Inspect the Bladder

Examine the packaging of your drain cleaning bladder to confirm it is rated for the diameter of your pipe, which we've identified as 3-4 inches. Using the wrong size is ineffective and risky. A bladder that is too small will not create a proper seal, while one that's too large may not fit or could become lodged. Once you've confirmed the size, perform a thorough visual inspection of the bladder itself. Look for any cuts, punctures, cracks, or signs of dry rot in the rubber. A compromised bladder can burst under pressure inside your pipe, turning a clog into a much more difficult retrieval and repair job.