VaporRemed is also available in a 5 gallon (18.9 Liter) pack for larger area or for multiple application for eliminating fuel oil fumes almost instantly. Fuel oil fumes gone in minutes. Effective on concrete, wood and metals in the ratio of 1 gallon to 100 square feet or 3.785 liters for about 10 square meters. In soil 5 gallons would treat surface contamination in 100 square feet or 10 square meters of moist dirt.