Salt is a crystalline mineral that can be obtained from sea water and rock deposits. Salt is essential to both human and animal life and has long been considered important in human society, as it has been used for seasoning and the preservation of food. In various religions and the supernatural world, salt is praised for its cleansing and purifying effect. For this reason, it has been used to cleanse evil energies and ward off evil for generations.

Spirits are particularly vulnerable to salt. Their entrance can blocked by drawing lines of salt around a certain area, as they cannot pass over it. By drawing lines of salt in openings like doors and windows, buildings can be shielded from Spirits. Additionally, direct contact with salt will cause their apparation to disperse.