When contained within a toilet bowl, this expanding gas creates pressure that can help break apart the clog, while the fizzing action helps dissolve organic matter and grime build-up on the sides of the pipes.
Slowly pour one to two cups of white vinegar into the bowl. Do this gradually. The reaction is immediate and vigorous. If you dump it all in at once, you will create a foaming mess all over your bathroom floor. Pour until the fizzing subsides. how to unclog a toilet with baking soda and vinegar