Sometimes rugs need to be washed and particles should be removed from the surface. This keeps the rug in the main shape and situation and colors look in the original intense as desired by the weaver. An effective wash can change the appearance of the rug and give a new look to it. It's a beneficial action and critic on a washed carpet is not logical and resembles the thought that particles of paintings shouldn't be removed to indicate their age and importance.

Actually, aging should be differentiated from particles. Time makes a rug aged due to the reaction of colors and oxygen in presence of water or light that leads to pale colors; wearing a rug removes irregularities and gives a better appearance to the rug. Settling the particles, spots and grey dirty layers make the rug pale, and on the other hand, gathering the particles around knots deeply destroys the knots and if they are not removed, they will bring more wearing of the carpet. Therefore washing carpet is a benefitting and unavoidable activity but the best method should be selected to decrease the danger. Composing fibers are natural and despite common conception, they are not hydrophobic but the amount of water should be carefully determined, and sufficient heat is required to dry the rug in a way that fiber wouldn't be left wet. Wool, cotton, and silk are more sensitive to chemical substances rather than water especially if they are dyed; so everything shouldn't be trusted in dying. The main danger is for colors especially if they were organic and traditional, indeed they would be inconsistent in water. So before everything consistency of colors must be determined; a white piece of fabric, which is clear, should be drenched in solution and then scrub the back of the rug and its side. If after several times there is nothing on the fabric, colors are consistent and washing can be launched and washing can be done by a professional company, too. It should be noted that the rug couldn’t always be washed at home. As mentioned before washing is not just removing the particles but is important in the longevity of the rug. Improper washing can have a reverse result. Brushing the rug roughly can make the wool fragile and speed up the destruction.

These instances indicate that proper diagnosis is critical in treatment. In fact, rugs are not the same in structure and other features and just a professional can select the appropriate way of washing.