In Vodou, works such as these are known as Aret. “Aret” means to stop. That is because it works to stop things from coming, from occurring, or stopping something that is currently in action. Houngans and Mambos actually do more complex and elaborate works so that people can place these around their home, inside or outside. These wanga are sometimes fed to keep the spirit working inside of them working.
If you are wondering why I am instructing you to speak to your spirits, the answer is simple: those are the spirits you will be serving the most, your ancestors, those that walk with you, those you have a close relationship with, your Met Tet, etc. Everyone walks with different spirits and although two people may have Ogou, they undoubtedly have different and other spirits they serve or walk with.
You will need:
Light your candle and pray the Our Father and the Hail Mary. After this, speak to your spirits. Tell them to protectyou, your family, and your home. Tell them to fight for you, if need be.
Then orient the nails to the four directions. After you do this, place them into the metal plate. Cover them with Florida water. Light them on fire. Talk to your spirits, continue asking them to protect you and fight for you. Ask them to only let good enter your home.
Once cool, bury these four nails at the four corners of your home. Again, when you plunge them into the earth, close to your home, talk to the spirits. You can also put them at the four corners of your property line. Your home is now a fortress.