GroGreen FILT COMP 080010 8" x 10" Compost Filter Sock - This Compost Filter Sock is designed as an effective and economical product for sediment control on construction sites. The durable construction installs in minutes. Other uses include silt dike type structures, diversion dikes, continuous barrier, temporary ditch liner, slope interruption device, stream and pond protection. The filter mixture is 100% shredded wood compost in variable sized particles. The recycled material is approximately 3/4" to 2" in size. The compost mixture is held inside a UV stabilized woven geotextile.