GroGreen WATT STRW 1210 12" x 10' Straw Sediment Control Log - This Straw Sediment Control Log is composed of 100% clean, certified weed free straw fiber matrix confined by a synthetic net to form a log of a specific diameter. Straw Logs are designed to reduce hydraulic energy and filter sediment laden flow in channels and on slopes. The logs are flexible to conform to the soil surface and are secured by staking.