Both Vinegar and Bleach are home-based products, but bleach consists of harmful chemicals and emits toxic fumes when it comes in contact with the surface. Also, it might damage the surface with its harmful chemicals. Finally, bleach is only useful for non-porous surfaces. Thus, Vinegar is better to kill the mold as it is sufficient for killing around 83% of mold species and does not produce any harmful chemicals while using it to kill the mold.