DeWitt natural garden weed-barrier is made from all natural cellulose fibers. It is a 100-percent biodegradable paper mulch that decomposes at the end of the season. This garden mulch effectively eliminates weeds, helps reduce erosion, can moderate soil temperatures and can be worked in to the soil after the growing season. DeWitt garden weed barrier is the environmentally sound and acceptable replacement for plastic mulches and is a natural choice for the environmentally concsious.