First remove coarse dirt and manure with a high-pressure washer. Foam on TopFoam Power at a rate of 1-2%. Let soak for 30-60 minutes. Do not let the product dry. If it does dry, make it damp again before washing off. For best foam quality we recommend using cold water. Top Foam Power can save up to 30% in actual working time, water, and product consumption while producing excellent results.