Over"n out fire ant killer granules keep fire ants dead for 6 months and the queen and colony. One application lasts for six months, rain or shine. Residual control protects new mounds from forming. Broadcast treat using a drop or rotary spreader. Treats up to 5,000 square feet area. Best for outdoor and residential use. Measures 3-inch length by 11-1/2-inch width by 15-inch height.