Advanced Erosion Logs FILTER SOCK The filter sock is an economical and environmentally friendly alternative to silt fence, straw bales and wattles used for sediment control on construction sites. Use in a variety of applications for sediment control: Lot Wraps & Perimeter ControlInlet ProtectionDitch ChecksConcrete Washout Containment Palletized Sediment ControlWeather ProofStakes IncludedAvailable in 8, 12 & 18″ DiametersAlso Available in Custom Lengths