The term 'Dirt Trapper' is a job description for a MAT, which stands for Material Attendant. A Material Attendant is responsible for the safe and efficient handling of materials in a warehouse or other industrial setting. They are also responsible for ensuring that dirt and debris are kept out of the work area. Dirt Trappers are expected to be knowledgeable about the proper use of safety equipment and to be able to identify potential hazards. They must also be able to follow instructions and maintain a clean and organized work environment.