Black witches salt is also known as salt negro, banishment salt, and protection salt. 

This is not to be confused with edible black salt. This recipe is NOT EDIBLE.

This salt can be used for protection spells, placed in a dish to absorb low vibration energy, and in rituals.

To dispose of used black salt:
Fire is best – outside with plenty of air flow and bury the ashes. Give thanks to the elements for their service to you and the Earth and Air for transmuting what you buried.
Water is also a good way to dispose of used salt. Make sure the water is flowing. You do not want the used salt chillin’ in stagnant water. Give thanks to water for purifying what you used and to the elements for their service to you.