Mountain West Products Large Bark is an all natural product coming straight from nature. This product is professionally screened to become a chunk bark or bark nugget. Large bark is commonly used in the landscape industry as a decorative ground cover for high profile areas such as walkways and entrances. Large bark also provides benefits as a natural weed barrier and protecting the ground from harsh temperatures. Another great use for Large Bark is for filtration. Large Douglas Fir and Ponderosa Pine bark is used in cities and towns for Bio-filter filtration systems.