Lodestone Food is also known as magnetic sand. It is powerfully magnetized iron filings that are usually "fed" to lodestones either as a part of a magick ritual for attracting something to you, or to just maintain the magnetism of the lodestone. 2 ounce bag. Magnetic sand is also used as an ingredient in mojo bags to add to their powers of attraction or to increase magickal power in general. I use it in my Magnet oil. For more Voudou and Hoodoo magick potions, read our blog article.