After the pre-wash inspection is complete, the first step is dusting.  A wool rug may hold pounds of dry dirt that is not visible to the eye.  Wool fibers have fish scale type pockets which hold many times their weight in soil, dander, mites and grit.  This is not just “dirt” but bacteria, germs, oils and many other contaminates tracked in by your feet. 

Simply washing a rug full of dirt in the foundation and face fibers’ creates a muddy mess.  This is why each rug needs to be dusted before it gets wet.