When a customer asked me if I had Four Banks Dirt, I had never heard of it before but I immediately understood what it was for! Four banks contributing to and backing up your four squares, the four corners of a property, a house, the four corners of the property deed. The number four has a lot to do with Prosperity workings (four is the magick number of Jupiter) and any magick to do with the landscape, the four corners of a home, the four directions of the compass.
Four Banks Dirt is classic Hoodoo style sympathetic magick for whenever you need the prosperity of four banks backing you up. In this case, the dirt was gathered from Chase, Wells Fargo, Bank of America, and of course, Prosperity Bank, on a Thursday immediately before the Full Moon.