Shedding or piling is very normal for new carpeting, especially those made with staple carpet fibers (as opposed to bulked continuous filament (BCF) fibers). When yarn is sheared at a factory, pieces fall into the pile of carpets. These pieces become loose after installation. Most shedding will stop in a short time with regular vacuuming. Some carpets take longer than others, and the duration of shredding is determined by the way the carpet was manufactured.