Studies by the German Allergy and Asthma Association (DAAB e.V.) show that the use of a needle felt cover can significantly reduce the risk of increased fine dust pollution in indoor areas, in contrast to a smooth floor covering. The high dust-binding capacity of needle felt ensures that it does not swirl through the room air as easily as is the case with smooth and hard surfaces. Needle fleece binds the fine dust particles, which also contain the allergy-causing mite excrement, until the next time you vacuum. The best result is achieved by vacuuming with an electrically powered brush. Dirt particles of different shapes are removed from the depth of the fiber layer solely through the mechanical action of the bristling of a powerful brush vacuum. This means that dust particles cannot get into the room air and cannot be inhaled.