Dustless Blasting suppresses the plume of dust, allowing you to work almost anywhere with minimal containment.
Imagine that you are stripping a car in a football stadium. With Dustless Blasting, the blast media would be contained in an area about the size of the logo in the center of the field. On the other hand, if you were dry sandblasting, the entire stadium would be filled with airborne media.
Unfortunately, the process isn't magic. Media that goes into the machine must come out, and it doesn't disappear into thin air. But compared to sandblasting, the process is essentially dustless because there are so few airborne particles.