VFI-1009 should be diluted at a 1 to 10 ratio with water, accordingly, 5-gallons (19 liters) should be mixed with 50-gallons (189 liters) of water in a 55-gallon (209 liter) drum.
Apply the diluted cleaning solution to the substrate under low pressure at the rate of 150-400 sq. ft. per diluted gallon (1,650-4,400 sq. ft. per concentrated gallon). Allow the solution to stand for a minimum of 15 minutes. Low areas and depressions in the substrate having excessive dirt build-up may require additional solution and/or scrubbing with a stiff-bristled broom. Extremely stubborn areas may require treatment with a more concentrated dilution.