Tenax Silt Fence Erosion Control with Posts 3' X 100' is the ideal barrier for sediment control around construction sites or wherever there is bare earth. The woven geotextile used on this silt fence is designed to filter out sediment from construction site run-off and allow clean water to pass through. It comes pre-assembled with hardwood stakes, allowing you to quickly install it and reap the benefits of its innovative, eco-friendly design.