Construction Hay Bales Hay Bales for erosion control, mulch hay or construction hay; Straw; Straw wattles ; Silt Fence; Stakes - 3ft or 4ft. Mulch hay, also called “construction hay„ bales are also used with silt fence to control erosion. While our hay may also be used to mulch gardens, we suggest our straw bales as it contains few or no seeds.
