Beauty bark is generally used as a mulch to control evaporation of water and prevent weed growth in gardens. It is also occasionally used in indoor arenas for horses. The size of our Medium Fine Bark is 1" Minus, meaning anything that will fit through a 1" screen. When applying as a top dressing you need 1 yard for every 100sq ft or 10' x 10' ft area this will put it 3" deep.
Also our bark is all Hem Fir ~ Doug Fir. We don't add anything else to stretch it out. You want bark and bark is what you get.