Have you known?!
Salt has many uses, even in magic. One of these uses is clearance from accumulated in a room negative fluids. This is possible thanks to the crystal structure of salt. The crystal acts as a highly absorbent sponge and the triangular structure in the crystal structure acts as a trap that captures and retains in itself the absorbed by the crystal energy. Placing salt at the four corners of a room for about 24 hours will help for the fully clearing of the accumulated in it energies.