A dust-free litter box system for capturing stray particles generated when a pet uses a litter box features an inner tray with a plurality of slots. A fan notch is centrally located in a posterior tray wall for receiving a fan assembly. The inner tray features motion sensors connected to a power source. An air tube assembly is located around an outer perimeter of the inner tray close to an inner tray top edge. The air tube assembly features perforated tubing connected to the plurality of slots and an air tube manifold connected to a fan shroud. A fan aperture is centrally located in a posterior outer tray wall for receiving a fan filter and a protective grill. The inner tray is located in the outer tray.
