CALUMET, MI — Dirt Bag Inc. recently delivered more than 9,000 PC Dirt Bags to the United States’ armed forces in the Middle East. Dirt Bag uses patented technology in a special filter designed to protect computers from airborne dust, dirt and grime — providing a solution for the sandstorm environments in the Middle East where dust settles on the computer monitor, insulating the components and causing the machine to overheat. Read more.