How to stop toilet from backing up into tub?
How to stop toilet from backing up into tub? You can also stop your toilet backing up into tub by rinsing the drain with a solution of baking soda and vinegar. Pour one cup of baking soda directly down your shower drain and then follow it up with a cup of vinegar. The solution will bubble slightly, but once it subsides, close the drain or seal it off. Why does my bathtub backup when I take a shower? Because tub and shower drains sit lower than more highly elevated sink drains, backups tend to hit bathtub and shower drains first....