When cleaning Gabbeh rugs, professionals start with a dye test to ensure the colors are stable. If needed, they apply a dye fixative to prevent color bleeding. Instead of using a vacuum, experts use harmonic vibrations to gently remove deep-seated dirt, dust, pet hair, and other debris. The rugs are then submerged in soaking troughs, washed with mild detergent, and thoroughly rinsed in a washing pool. The process also includes hand-grooming, stain removal, odor treatments, and careful drying to preserve the rug's quality.