With gas and diesel prices soaring, thieves will start to target fuel tanks on farms. Don Thomson, with the Marion County Sheriff's Office says farmers often use red dye colored diesel, because it isn't taxed at the same rate as highway diesel, and farmers should post a notice on the tanks., because thieves will generally not steal red diesel. Thomson says a good lock will also deter thieves. Other tips include keeping gas cards in a safe place; don't write pin numbers on the cards, and motion sensing lights help keep thieves away from farm equipment.