Our fellow hoodoo doers have answered the hoodoo methods.
Tis' a general method. Salt is a purifier, cover said amulet or charm under salt (from packet or whatever) ordinary table salt will do for a night.
Then the next day wash the salt out of it. Keep it under running water (from the tap) for the negative stuff to be washed away, and hey presto. It's all pure and ready to be "programmed" with whatever you want it to do.
You'll be surprised at the other kinds of things that can be hoodoo-ed. For example gifts to be given to people, or the enemy.
