If the toilet does not unclog on the first try, do not flush again, as this will add more water to an already blocked system. Instead:
If the clog remains after one attempt, repeat steps 2–5. If still unsuccessful, use a plunger. The baking soda/vinegar reaction may have loosened the clog, making plunging more effective.
Using baking soda and vinegar to unclog a toilet is a safe, inexpensive, and environmentally friendly first-line treatment for minor blockages. While it is less powerful than a plunger or chemical cleaner, it is worth attempting due to its simplicity and lack of toxicity. For persistent or severe clogs, mechanical methods like a plunger or plumbing auger remain the most reliable solutions.
If the toilet bowl is nearly full to the rim, remove some water using a small cup or an old towel (dispose of it properly). You want enough water to cover the drain opening, but not so much that the reaction overflows.
Lay old towels or rags around the base of the toilet. This ensures that any splashing or overflow does not damage your flooring. Ensure the bathroom is well-ventilated.
Try flushing the toilet. If the water level rises, stop immediately. If it drains normally, success.