As diatoms are made from silica this makes diatomaceous earth very abrasive, and so the sharpness enhances the particles as a pesticide. Product Information This means that for the first time now the cattle farmer, horse farmer, and game farmer can use a natural product. Required application for horses and cattle is approximately 500kg. 400kg is spread on the ground in the kraal and 100kg hung at the gate entrance in hessian bags where the animals rub against the bags when walking past. For game application, 500kg spread in 4m x 4m area, especially near waterholes. Diatoms Rolling Compound is not affected by rain. Can also be used where lions and cheetahs are bred.